All Classes

Class	Description
AbstractAggregationBuilder<AB extends AbstractAggregationBuilder<AB>>	Base implementation of a AggregationBuilder.
AbstractAllocateAllocationCommand	Abstract base class for allocating an unassigned shard to a node
AbstractAllocateAllocationCommand.Builder<T extends AbstractAllocateAllocationCommand>	Works around ObjectParser not supporting constructor arguments.
AbstractAllocationDecision	An abstract class for representing various types of allocation decisions.
AbstractAnalysisFactory	Abstract parent class for analysis factories TokenizerFactory, TokenFilterFactory and CharFilterFactory.
AbstractAsyncTask	A base class for tasks that need to repeat.
AbstractAtomicGeoPointFieldData
AbstractAtomicOrdinalsFieldData
AbstractBinaryDocValues	Base implementation that throws an IOException for the DocIdSetIterator APIs.
AbstractBindingBuilder<T>	Bind a value or constant.
AbstractBlobContainer	A base abstract blob container that implements higher level container methods.
AbstractBulkByScrollRequest<Self extends AbstractBulkByScrollRequest<Self>>
AbstractBulkIndexByScrollRequest<Self extends AbstractBulkIndexByScrollRequest<Self>>
AbstractCatAction
AbstractClient
AbstractDiffable<T extends Diffable<T>>	Abstract diffable object with simple diffs implementation that sends the entire object if object has changed or nothing is object remained the same.
AbstractDistanceCalculator
AbstractGeometryFieldMapper<Parsed,Processed>	Base class for GeoShapeFieldMapper and LegacyGeoShapeFieldMapper
AbstractGeometryFieldMapper.AbstractGeometryFieldType<Parsed,Processed>
AbstractGeometryFieldMapper.Builder<T extends AbstractGeometryFieldMapper.Builder,Y extends AbstractGeometryFieldMapper>
AbstractGeometryFieldMapper.Defaults
AbstractGeometryFieldMapper.Indexer<Parsed,Processed>	Interface representing an preprocessor in geo-shape indexing pipeline
AbstractGeometryFieldMapper.Names
AbstractGeometryFieldMapper.Parser<Parsed>	interface representing parser in geo shape indexing pipeline
AbstractGeometryFieldMapper.QueryProcessor	interface representing a query builder that generates a query from the given shape
AbstractGeometryFieldMapper.TypeParser
AbstractGeometryQueryBuilder<QB extends AbstractGeometryQueryBuilder<QB>>	Base QueryBuilder that builds a Geometry Query
AbstractGeometryQueryBuilder.ParsedGeometryQueryParams	local class that encapsulates xcontent parsed shape parameters
AbstractHighlighterBuilder<HB extends AbstractHighlighterBuilder<?>>	This abstract class holds parameters shared by HighlightBuilder and HighlightBuilder.Field and provides the common setters, equality, hashCode calculation and common serialization
AbstractHistogram	An abstract base class for integer values High Dynamic Range (HDR) Histograms
AbstractIndexAnalyzerProvider<T extends Analyzer>
AbstractIndexComponent
AbstractIndexFieldData<FD extends AtomicFieldData>
AbstractIndexFieldData.PerValueEstimator	A PerValueEstimator is a sub-class that can be used to estimate the memory overhead for loading the data.
AbstractIndexOrdinalsFieldData
AbstractIndexShardComponent
AbstractIndicesPrivileges
AbstractIndicesPrivileges.FieldSecurity
AbstractInternalProfileTree<PB extends AbstractProfileBreakdown<?>,E>
AbstractIterator<E>	Simplifies the implementation of iterators a bit.
AbstractLatLonPointDVIndexFieldData
AbstractLatLonPointDVIndexFieldData.Builder
AbstractLatLonPointDVIndexFieldData.LatLonPointDVIndexFieldData
AbstractLifecycleComponent
AbstractLifecycleRunnable	AbstractLifecycleRunnable is a service-lifecycle aware AbstractRunnable.
AbstractMatcher<T>	Implements and() and or().
AbstractModule	A support class for Modules which reduces repetition and results in a more readable configuration.
AbstractNamedDiffable<T extends NamedDiffable<T>>	Abstract diffable object with simple diffs implementation that sends the entire object if object has changed or nothing is object remained the same.
AbstractNode	A node of an AbstractSTRtree.
AbstractNumericDocValues	Base implementation that throws an IOException for the DocIdSetIterator APIs.
AbstractObjectParser<Value,Context>	Superclass for ObjectParser and ConstructingObjectParser.
AbstractPagedMutable<T extends AbstractPagedMutable<T>>	Base implementation for PagedMutable and PagedGrowableWriter.
AbstractPipelineAggregationBuilder<PAB extends AbstractPipelineAggregationBuilder<PAB>>	Base implementation of a PipelineAggregationBuilder.
AbstractPrefixTreeQuery	Base class for Lucene Queries on SpatialPrefixTree fields.
AbstractProcessor	An Abstract Processor that holds a processorTag field to be used by other processors.
AbstractProfileBreakdown<T extends Enum<T>>	A record of timings for the various operations that may happen during query execution.
AbstractProfiler<PB extends AbstractProfileBreakdown<?>,E>
AbstractQueryBuilder<QB extends AbstractQueryBuilder<QB>>	Base class for all classes producing lucene queries.
AbstractRangeAggregatorFactory<R extends RangeAggregator.Range>
AbstractRangeBuilder<AB extends AbstractRangeBuilder<AB,R>,R extends RangeAggregator.Range>
AbstractRareTermsAggregator<T extends ValuesSource,U extends IncludeExclude.Filter,V>
AbstractRecyclerC<T>
AbstractRefCounted	A basic RefCounted implementation that is initialized with a ref count of 1 and calls AbstractRefCounted.closeInternal() once it reaches a 0 ref count
AbstractResultResponse<T extends ToXContent>	Abstract class that provides a list of results and their count.
AbstractRunnable	An extension to runnable.
AbstractScopedSettings	A basic setting service that can be used for per-index and per-cluster settings.
AbstractScopedSettings.SettingUpdater<T>	Transactional interface to update settings.
AbstractSortedDocValues	Base implementation that throws an IOException for the DocIdSetIterator APIs.
AbstractSortedNumericDocValues	Base implementation that throws an IOException for the DocIdSetIterator APIs.
AbstractSortedSetDocValues	Base implementation that throws an IOException for the DocIdSetIterator APIs.
AbstractSortingNumericDocValues	Base implementation that throws an IOException for the DocIdSetIterator APIs.
AbstractSTRtree	Base class for STRtree and SIRtree.
AbstractSTRtree.IntersectsOp	A test for intersection between two bounds, necessary because subclasses of AbstractSTRtree have different implementations of bounds.
AbstractTDigest
AbstractTokenFilterFactory
AbstractTokenizerFactory
AbstractVisitingPrefixTreeQuery	Traverses a SpatialPrefixTree indexed field, using the template and visitor design patterns for subclasses to guide the traversal and collect matching documents.
AbstractVisitingPrefixTreeQuery.VNode	A visitor node/cell found via the query shape for AbstractVisitingPrefixTreeQuery.VisitorTemplate.
AbstractXContentParser
Accountable	An object whose RAM usage can be computed.
Accountables	Helper methods for constructing nested resource descriptions and debugging RAM usage.
AckClusterStatePublishResponseHandler	Allows to wait for all nodes to reply to the publish of a new cluster state and notifies the ClusterStatePublisher.AckListener so that the cluster state update can be acknowledged
AckedClusterStateTaskListener
AckedClusterStateUpdateTask<Response>	An extension interface to ClusterStateUpdateTask that allows to be notified when all the nodes have acknowledged a cluster state update request
AckedRequest	Identifies a cluster state update request with acknowledgement support
AcknowledgedRequest<Request extends MasterNodeRequest<Request>>	Abstract class that allows to mark action requests that support acknowledgements.
AcknowledgedRequestBuilder<Request extends AcknowledgedRequest<Request>,Response extends AcknowledgedResponse,RequestBuilder extends AcknowledgedRequestBuilder<Request,Response,RequestBuilder>>	Base request builder for master node operations that support acknowledgements
AcknowledgedResponse	A response that indicates that a request has been acknowledged
AcknowledgedResponse
AcknowledgedTasksResponse
AckWatchRequest	A request to explicitly acknowledge a watch.
AckWatchResponse	The response from an 'ack watch' request.
ActionFilter	A filter allowing to filter transport actions
ActionFilter.Simple	A simple base class for injectable action filters that spares the implementation from handling the filter chain.
ActionFilterChain<Request extends ActionRequest,Response extends ActionResponse>	A filter chain allowing to continue and process the transport action request
ActionFilters	Holds the action filters injected through plugins, properly sorted by ActionFilter.order()
ActionFuture<T>	An extension to Future allowing for simplified "get" operations.
ActionListener<Response>	A listener for action responses or failures.
ActionListenerResponseHandler<Response extends TransportResponse>	A simple base class for action response listeners, defaulting to using the SAME executor (as its very common on response handlers).
ActionModule	Builds and binds the generic action map, all TransportActions, and ActionFilters.
ActionNotFoundTransportException	An exception indicating that a transport action was not found.
ActionPlugin	An additional extension point for Plugins that extends Elasticsearch's scripting functionality.
ActionPlugin.ActionHandler<Request extends ActionRequest,Response extends ActionResponse>
ActionRequest
ActionRequestBuilder<Request extends ActionRequest,Response extends ActionResponse>
ActionRequestValidationException
ActionResponse	Base class for responses to action requests.
ActionRunnable<Response>	Base class for Runnables that need to call ActionListener.onFailure(Exception) in case an uncaught exception or error is thrown while the actual action is run.
ActionStatus
ActionStatus.AckStatus
ActionStatus.AckStatus.State
ActionStatus.Execution
ActionStatus.Throttle
ActionTransportException	An action invocation failure.
ActionType<Response extends ActionResponse>	A generic action.
ActivateWatchRequest	A request to explicitly activate a watch.
ActivateWatchResponse	Response from an 'activate watch' request.
ActiveShardCount	A class whose instances represent a value for counting the number of active shard copies for a given shard in an index.
ActiveShardsObserver	This class provides primitives for waiting for a configured number of shards to become active before sending a response on an ActionListener.
AdapterActionFuture<T,L>
AdaptiveSelectionStats	Class representing statistics about adaptive replica selection.
AddVotingConfigExclusionsAction
AddVotingConfigExclusionsRequest	A request to add voting config exclusions for certain master-eligible nodes, and wait for these nodes to be removed from the voting configuration.
AddVotingConfigExclusionsResponse	A response to AddVotingConfigExclusionsRequest indicating that voting config exclusions have been added for the requested nodes and these nodes have been removed from the voting configuration.
AdjacencyMatrix	A multi bucket aggregation where the buckets are defined by a set of filters (a bucket is produced per filter plus a bucket for each non-empty filter intersection so A, B and A&B).
AdjacencyMatrix.Bucket	A bucket associated with a specific filter or pair (identified by its key)
AdjacencyMatrixAggregationBuilder
AdjacencyMatrixAggregator	Aggregation for adjacency matrices.
AdjacencyMatrixAggregator.KeyedFilter
AdjacencyMatrixAggregatorFactory
AdminClient	Administrative actions/operations against the cluster or the indices.
AffineTransformation	Represents an affine transformation on the 2D Cartesian plane.
AfterEffect	This class acts as the base class for the implementations of the first normalization of the informative content in the DFR framework.
AfterEffectB	Model of the information gain based on the ratio of two Bernoulli processes.
AfterEffectL	Model of the information gain based on Laplace's law of succession.
AggregatedDfs
Aggregation	An aggregation.
Aggregation.CommonFields	Common xcontent fields that are shared among addAggregation
AggregationBuilder	A factory that knows how to create an Aggregator of a specific type.
AggregationBuilder.CommonFields	Common xcontent fields shared among aggregator builders
AggregationConfig
AggregationExecutionException	Thrown when failing to execute an aggregation
AggregationInitializationException	Thrown when failing to execute an aggregation
AggregationPath	A path that can be used to sort/order buckets (in some multi-bucket aggregations, e.g.
AggregationPath.PathElement
AggregationPhase	Aggregation phase of a search request, used to collect aggregations
AggregationProfileBreakdown
AggregationProfiler
AggregationProfileShardResult	A container class to hold the profile results for a single shard in the request.
Aggregations	Represents a set of Aggregations
AggregationScript
AggregationScript.Factory	A factory to construct stateful AggregationScript factories for a specific index.
AggregationScript.LeafFactory	A factory to construct AggregationScript instances.
AggregationTimingType
Aggregator	An Aggregator.
Aggregator.Parser	Parses the aggregation request and creates the appropriate aggregator factory for it.
Aggregator.SubAggCollectionMode	Aggregation mode for sub aggregations.
AggregatorBase	Base implementation for concrete aggregators.
AggregatorFactories
AggregatorFactories.AggParseContext	Context to parse and aggregation.
AggregatorFactories.Builder
AggregatorFactory
AggregatorFactory.MultiBucketAggregatorWrapper
Alias	Represents an alias, to be associated with an index
AliasAction	Individual operation to perform on the cluster state as part of an IndicesAliasesRequest.
AliasAction.Add	Operation to add an alias to an index.
AliasAction.NewAliasValidator	Validate a new alias.
AliasAction.Remove	Operation to remove an alias from an index.
AliasAction.RemoveIndex	Operation to remove an index.
AliasesExistAction
AliasesExistRequestBuilder
AliasesExistResponse
AliasesNotFoundException
AliasesRequest	Needs to be implemented by all ActionRequest subclasses that relate to one or more indices and one or more aliases.
AliasFilter	Represents a QueryBuilder and a list of alias names that filters the builder is composed of.
AliasFilterParsingException
AliasMetaData
AliasMetaData.Builder
AliasOrIndex	Encapsulates the IndexMetaData instances of a concrete index or indices an alias is pointing to.
AliasOrIndex.Alias	Represents an alias and groups all IndexMetaData instances sharing the same alias name together.
AliasOrIndex.Index	Represents an concrete index and encapsulates its IndexMetaData
AliasValidator	Validator for an alias, to be used before adding an alias to the index metadata and make sure the alias is valid
AllCircuitBreakerStats	Stats class encapsulating all of the different circuit breaker stats
AllFieldMapper	Noop mapper that ensures that mappings created in 6x that explicitly disable the _all field can be restored in this version.
AllFieldMapper.Builder
AllFieldMapper.Defaults
AllFieldMapper.TypeParser
AllocateAction
AllocatedPersistentTask	Represents a executor node operation that corresponds to a persistent task
AllocatedPersistentTask.State
AllocateEmptyPrimaryAllocationCommand	Allocates an unassigned empty primary shard to a specific node.
AllocateEmptyPrimaryAllocationCommand.Builder
AllocateReplicaAllocationCommand	Allocates an unassigned replica shard to a specific node.
AllocateReplicaAllocationCommand.Builder
AllocateStalePrimaryAllocationCommand	Allocates an unassigned stale primary shard to a specific node.
AllocateStalePrimaryAllocationCommand.Builder
AllocateUnassignedDecision	Represents the allocation decision by an allocator for an unassigned shard.
AllocationCommand	A command to move shards in some way.
AllocationCommands	A simple AllocationCommand composite managing several AllocationCommand implementations
AllocationDecider	AllocationDecider is an abstract base class that allows to make dynamic cluster- or index-wide shard allocation decisions on a per-node basis.
AllocationDeciders	A composite AllocationDecider combining the "decision" of multiple AllocationDecider implementations into a single allocation decision.
AllocationDecision	An enum which represents the various decision types that can be taken by the allocators and deciders for allocating a shard to a node.
AllocationId	Uniquely identifies an allocation.
AllocationService	This service manages the node allocation of a cluster.
AllocationService.CommandsResult	this class is used to describe results of applying a set of AllocationCommand
AllRoleMapperExpression	An expression that evaluates to true if-and-only-if all its children evaluate to true.
AllRoleMapperExpression.Builder
AllValuesIterator	Used for iterating through histogram values using the finest granularity steps supported by the underlying representation.
AlreadyClosedException	This exception is thrown when there is an attempt to access something that has already been closed.
Analysis
AnalysisConfig	Analysis configuration options that describe which fields are analyzed and which functions are used to detect anomalies.
AnalysisConfig.Builder
AnalysisLimits	Analysis limits for autodetect.
AnalysisMode	Enum representing the mode in which token filters and analyzers are allowed to operate.
AnalysisModule	Sets up AnalysisRegistry.
AnalysisModule.AnalysisProvider<T>	The basic factory interface for analysis components.
AnalysisOffsetStrategy	Provides a base class for analysis based offset strategies to extend from.
AnalysisPlugin	An additional extension point for Plugins that extends Elasticsearch's analysis functionality.
AnalysisRegistry	An internal registry for tokenizer, token filter, char filter and analyzer.
AnalysisSPILoader<S extends AbstractAnalysisFactory>	Helper class for loading named SPIs from classpath (e.g.
AnalyzeAction
AnalyzeAction.AnalyzeToken
AnalyzeAction.AnalyzeTokenList
AnalyzeAction.CharFilteredText
AnalyzeAction.DetailAnalyzeResponse
AnalyzeAction.Request	A request to analyze a text associated with a specific index.
AnalyzeAction.Response
Analyzer	An Analyzer builds TokenStreams, which analyze text.
Analyzer.ReuseStrategy	Strategy defining how TokenStreamComponents are reused per call to Analyzer.tokenStream(String, java.io.Reader).
Analyzer.TokenStreamComponents	This class encapsulates the outer components of a token stream.
AnalyzerComponents	A class that groups analysis components necessary to produce a custom analyzer.
AnalyzerComponentsProvider	Analyzers that provide access to their token filters should implement this
AnalyzeRequest	A request to analyze text
AnalyzeRequest.CustomAnalyzerBuilder	Helper class to build custom analyzer definitions
AnalyzeRequestBuilder
AnalyzeResponse
AnalyzeResponse.AnalyzeToken
AnalyzerProvider<T extends Analyzer>
AnalyzerScope
AnalyzerWrapper	Extension to Analyzer suitable for Analyzers which wrap other Analyzers.
Angle	Utility functions for working with angles.
AnnotatedBindingBuilder<T>	See the EDSL examples at Binder.
AnnotatedConstantBindingBuilder	See the EDSL examples at Binder.
AnnotatedElementBuilder	See the EDSL examples at Binder.
Annotations	Annotation utilities.
AnomalyCause	Anomaly Cause POJO.
AnomalyRecord	Anomaly Record POJO.
AnyRoleMapperExpression	An expression that evaluates to true if at least one of its children evaluate to true.
AnyRoleMapperExpression.Builder
ApiKey	API key information
ApplicationPrivilege	Represents an application specific privilege.
ApplicationPrivilege.Builder
ApplicationResourcePrivileges	Represents privileges over resources that are scoped under an application.
ApplyCommitRequest	A master node sends this request to its peers to inform them that it could commit the cluster state with the given term and version.
Area	Functions for computing area.
ArrayListVisitor	Builds an array of all visited items.
ArraySizingStrategy	Resizing (growth) strategy for array-backed buffers.
ArrayUtil	Methods for manipulating arrays.
ArrayUtils
ArrayValueMapperParser	A marker interface indicating that this mapper can handle array value, and the array itself should be passed to it.
Assert	A utility for making programming assertions.
AssertionFailedException	Thrown when the application is in an inconsistent state.
Assertions	Provides a static final field that can be used to check if assertions are enabled.
AssignmentDecision	AssignmentDecision represents the decision made during the process of assigning a persistent task to a node of the cluster.
AssignmentDecision.Type
AsyncBiFunction<T,U,C>	A BiFunction-like interface designed to be used with asynchronous executions.
AsyncIOProcessor<Item>	This async IO processor allows to batch IO operations and have a single writer processing the write operations.
AsyncShardFetch<T extends BaseNodeResponse>	Allows to asynchronously fetch shard related data from other nodes for allocation, without blocking the cluster update thread.
AsyncShardFetch.FetchResult<T extends BaseNodeResponse>	The result of a fetch operation.
AsyncShardFetch.Lister<NodesResponse extends BaseNodesResponse<NodeResponse>,NodeResponse extends BaseNodeResponse>	An action that lists the relevant shard data that needs to be fetched.
AtomicArray<E>	A list backed by an AtomicReferenceArray with potential null values, easily allowing to get the concrete values as a list using AtomicArray.asList().
AtomicFieldData	The thread safe LeafReader level cache of the data.
AtomicGeoPointFieldData	AtomicFieldData specialization for geo points.
AtomicHistogram	A High Dynamic Range (HDR) Histogram using atomic long count type
AtomicNumericFieldData	Specialization of AtomicFieldData for numeric data.
AtomicOrdinalsFieldData	Specialization of AtomicFieldData for data that is indexed with ordinals.
Attribute	Base interface for attributes.
AttributeFactory	An AttributeFactory creates instances of AttributeImpls.
AttributeFactory.StaticImplementationAttributeFactory<A extends AttributeImpl>	Expert: AttributeFactory returning an instance of the given clazz for the attributes it implements.
AttributeImpl	Base class for Attributes that can be added to a AttributeSource.
AttributeReflector	This interface is used to reflect contents of AttributeSource or AttributeImpl.
AttributeSource	An AttributeSource contains a list of different AttributeImpls, and methods to add and get them.
AttributeSource.State	This class holds the state of an AttributeSource.
AuthenticateRequest	Empty request object required to make the authenticate call.
AuthenticateResponse	The response for the authenticate call.
AuthenticateResponse.RealmInfo
AutoCreateIndex	Encapsulates the logic of whether a new index should be automatically created when a write operation is about to happen in a non existing index.
AutoDateHistogramAggregationBuilder
AutoDateHistogramAggregationBuilder.RoundingInfo
AutoDateHistogramAggregatorFactory
AutoExpandReplicas	This class acts as a functional wrapper around the index.auto_expand_replicas setting.
AutoFollowStats
AutoFollowStats.AutoFollowedCluster
Automata	Construction of basic automata.
Automaton	Represents an automaton and all its states and transitions.
Automaton.Builder	Records new states and transitions and then Automaton.Builder.finish() creates the Automaton.
AutomatonProvider	Automaton provider for RegExp. RegExp.toAutomaton(AutomatonProvider,int)
AutomatonQuery	A Query that will match terms against a finite-state machine.
AutomatonTermsEnum	A FilteredTermsEnum that enumerates terms based upon what is accepted by a DFA.
AutoQueueAdjustingExecutorBuilder	A builder for executors that automatically adjust the queue length as needed, depending on Little's Law.
Avg	An aggregation that computes the average of the values in the current bucket.
AvgAggregationBuilder
AvgBucketPipelineAggregationBuilder
AvgBucketPipelineAggregator
AVLTreeDigest
AwarenessAllocationDecider	This AllocationDecider controls shard allocation based on awareness key-value pairs defined in the node configuration.
BackoffPolicy	Provides a backoff policy for bulk requests.
BalancedShardsAllocator	The BalancedShardsAllocator re-balances the nodes allocations within an cluster based on a BalancedShardsAllocator.WeightFunction.
BalancedShardsAllocator.Balancer	A BalancedShardsAllocator.Balancer
BalancedShardsAllocator.WeightFunction	This class is the primary weight function used to create balanced over nodes and shards in the cluster.
BaseAggregationBuilder	Interface shared by AggregationBuilder and PipelineAggregationBuilder so they can conveniently share the same namespace for XContentParser.namedObject(Class, String, Object).
BaseAliasesRequestBuilder<Response extends ActionResponse,Builder extends BaseAliasesRequestBuilder<Response,Builder>>
BaseCompositeReader<R extends IndexReader>	Base class for implementing CompositeReaders based on an array of sub-readers.
BaseDirectory	Base implementation for a concrete Directory that uses a LockFactory for locking.
BaseFragListBuilder	A abstract implementation of FragListBuilder.
BaseFragmentsBuilder	Base FragmentsBuilder implementation that supports colored pre/post tags and multivalued fields.
BaseFuture<V>
BaseGatewayShardAllocator	An abstract class that implements basic functionality for allocating shards to nodes based on shard copies that already exist in the cluster.
BaseNodeRequest
BaseNodeResponse	A base class for node level operations.
BaseNodesRequest<Request extends BaseNodesRequest<Request>>
BaseNodesResponse<TNodeResponse extends BaseNodeResponse>
BasePrimaryAllocationCommand	Abstract base class for allocating an unassigned primary shard to a node
BasePrimaryAllocationCommand.Builder<T extends BasePrimaryAllocationCommand>
BaseRestHandler	Base handler for REST requests.
BaseRestHandler.RestChannelConsumer	REST requests are handled by preparing a channel consumer that represents the execution of the request against a channel.
BaseShape<T extends SpatialContext>
BaseTasksRequest<Request extends BaseTasksRequest<Request>>	A base class for task requests
BaseTasksResponse	Base class for responses of task-related operations
BaseTermQueryBuilder<QB extends BaseTermQueryBuilder<QB>>
BaseTermsEnum	A base TermsEnum that adds default implementations for BaseTermsEnum.attributes() BaseTermsEnum.termState() BaseTermsEnum.seekExact(BytesRef) BaseTermsEnum.seekExact(BytesRef, TermState) In some cases, the default implementation may be slow and consume huge memory, so subclass SHOULD have its own implementation if possible.
BaseTranslogReader	A base class for all classes that allows reading ops from translog files
BasicModel	This class acts as the base class for the specific basic model implementations in the DFR framework.
BasicModelG	Geometric as limiting form of the Bose-Einstein model.
BasicModelIF	An approximation of the I(ne) model.
BasicModelIn	The basic tf-idf model of randomness.
BasicModelIne	Tf-idf model of randomness, based on a mixture of Poisson and inverse document frequency.
BasicReplicationRequest	A replication request that has no more information than ReplicationRequest.
BasicSegmentString	Represents a list of contiguous line segments, and supports noding the segments.
BasicStats	Stores all statistics commonly used ranking methods.
BatchedRerouteService	A BatchedRerouteService is a RerouteService that batches together reroute requests to avoid unnecessary extra reroutes.
BBoxCalculator	(INTERNAL) Calculates the minimum bounding box given a bunch of rectangles (ranges).
BestBucketsDeferringCollector	A specialization of DeferringBucketCollector that collects all matches and then is able to replay a given subset of buckets which represent the survivors from a pruning process performed by the aggregator that owns this collector.
BestDocsDeferringCollector	A specialization of DeferringBucketCollector that collects all matches and then replays only the top scoring documents to child aggregations.
BigArray	Base abstraction of an array.
BigArrays	Utility class to work with arrays.
BinaryCodec	A binary shape format.
BinaryDocValues	A per-document numeric value.
BinaryDocValuesField	Field that stores a per-document BytesRef value.
BinaryDocValuesRangeQuery
BinaryDocValuesRangeQuery.QueryType
BinaryDVAtomicFieldData	AtomicFieldData impl on top of Lucene's binary doc values.
BinaryDVIndexFieldData
BinaryFieldMapper
BinaryFieldMapper.Builder
BinaryFieldMapper.CustomBinaryDocValuesField
BinaryFieldMapper.Defaults
BinaryFieldMapper.TypeParser
BinaryRangeAggregator	A range aggregator for values that are stored in SORTED_SET doc values.
BinaryRangeAggregator.Range
BinaryRangeAggregatorFactory
Binder	Collects configuration information (primarily bindings) which will be used to create an Injector.
BindHttpException
Binding<T>	A mapping from a key (type and optional annotation) to the strategy for getting instances of the type.
BindingAnnotation	Annotates annotations which are used for binding.
BindingBuilder<T>	Bind a non-constant key.
BindingImpl<T>
BindingScopingVisitor<V>	Visits each of the strategies used to scope an injection.
BindingTargetVisitor<T,V>	Visits each of the strategies used to find an instance to satisfy an injection.
BindTransportException
BitArray	A bit array that is implemented using a growing LongArray created from BigArrays.
BitDocIdSet	Implementation of the DocIdSet interface on top of a BitSet.
BitMixer	Bit mixing utilities.
Bits	Interface for Bitset-like structures.
Bits.MatchAllBits	Bits impl of the specified length with all bits set.
Bits.MatchNoBits	Bits impl of the specified length with no bits set.
BitSet	Base implementation for a bit set.
BitsetFilterCache	This is a cache for BitDocIdSet based filters and is unbounded by size or time.
BitsetFilterCache.Listener	A listener interface that is executed for each onCache / onRemoval event
BitsetFilterCache.Value
BitSetIterator	A DocIdSetIterator which iterates over set bits in a bit set.
BitSetProducer	A producer of BitSets per segment.
BitsProducer	A producer of Bits per segment.
BitUtil	A variety of high efficiency bit twiddling routines.
BitUtil	Utilities for common Bit twiddling methods.
BKDRadixSelector	Offline Radix selector for BKD tree.
BKDRadixSelector.PathSlice	Sliced reference to points in an PointWriter.
BKDReader	Handles intersection of an multi-dimensional shape in byte[] space with a block KD-tree previously written with BKDWriter.
BKDReader.BKDReaderDocIDSetIterator	Reusable DocIdSetIterator to handle low cardinality leaves.
BKDReader.IntersectState	Used to track all state for a single call to BKDReader.intersect(org.apache.lucene.index.PointValues.IntersectVisitor).
BKDWriter	Recursively builds a block KD-tree to assign all incoming points in N-dim space to smaller and smaller N-dim rectangles (cells) until the number of points in a given rectangle is <= maxPointsInLeafNode.
BlendedTermQuery	BlendedTermQuery can be used to unify term statistics across one or more fields in the index.
BlendedTermQuery	A Query that blends index statistics across multiple terms.
BlendedTermQuery.Builder	A Builder for BlendedTermQuery.
BlendedTermQuery.DisjunctionMaxRewrite	A BlendedTermQuery.RewriteMethod that creates a DisjunctionMaxQuery out of the sub queries.
BlendedTermQuery.RewriteMethod	A BlendedTermQuery.RewriteMethod defines how queries for individual terms should be merged.
BlobContainer	An interface for managing a repository of blob entries, where each blob entry is just a named group of bytes.
BlobMetaData	An interface for providing basic metadata about a blob.
BlobPath	The list of paths where a blob can reside.
BlobStore	An interface for storing blobs.
BlobStoreException
BlobStoreIndexShardSnapshot	Shard snapshot metadata
BlobStoreIndexShardSnapshot.FileInfo	Information about snapshotted file
BlobStoreIndexShardSnapshots	Contains information about all snapshots for the given shard in repository
BlobStoreRepository	BlobStore - based implementation of Snapshot Repository
BlockingClusterStatePublishResponseHandler	Handles responses obtained when publishing a new cluster state from master to all non master nodes.
BlockMaxDISI	DocIdSetIterator that skips non-competitive docs by checking the max score of the provided Scorer for the current block.
BlockPackedReaderIterator	Reader for sequences of longs written with BlockPackedWriter.
BlockPackedWriter	A writer for large sequences of longs.
BlockTermState	Holds all state required for PostingsReaderBase to produce a PostingsEnum without re-seeking the terms dict.
BlockTreeTermsReader	A block-based terms index and dictionary that assigns terms to variable length blocks according to how they share prefixes.
BlockTreeTermsReader.FSTLoadMode	An enum that allows to control if term index FSTs are loaded into memory or read off-heap
BlockTreeTermsWriter	Block-based terms index and dictionary writer.
BM25Similarity	BM25 Similarity.
BooleanClause	A clause in a BooleanQuery.
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
BooleanFieldMapper	A field mapper for boolean fields.
BooleanFieldMapper.BooleanFieldType
BooleanFieldMapper.Builder
BooleanFieldMapper.Defaults
BooleanFieldMapper.TypeParser
BooleanFieldMapper.Values
BooleanQuery	A Query that matches documents matching boolean combinations of other queries, e.g.
BooleanQuery.Builder	A builder for boolean queries.
BooleanQuery.TooManyClauses	Thrown when an attempt is made to add more than BooleanQuery.getMaxClauseCount() clauses.
Booleans
BooleanSimilarity	Simple similarity that gives terms a score that is equal to their query boost.
BoolQueryBuilder	A Query that matches documents matching boolean combinations of other queries.
BoostAttribute	Add this Attribute to a TermsEnum returned by MultiTermQuery.getTermsEnum(Terms,AttributeSource) and update the boost on each returned term.
BoostingQueryBuilder	The BoostingQuery class can be used to effectively demote results that match a given query.
BoostQuery	A Query wrapper that allows to give a boost to the wrapped query.
BootstrapCheck	Encapsulates a bootstrap check.
BootstrapCheck.BootstrapCheckResult	Encapsulate the result of a bootstrap check.
BootstrapContext	Context that is passed to every bootstrap check to make decisions on.
BootstrapInfo	Exposes system startup information
BootstrapSettings
Boundable	A spatial object in an AbstractSTRtree.
BoundablePairDistanceComparator	The Class BoundablePairDistanceComparator.
BoundaryNodeRule	An interface for rules which determine whether node points which are in boundaries of Lineal geometry components are in the boundary of the parent geometry collection.
BoundaryNodeRule.EndPointBoundaryNodeRule	A BoundaryNodeRule which specifies that any points which are endpoints of lineal components are in the boundary of the parent geometry.
BoundaryNodeRule.Mod2BoundaryNodeRule	A BoundaryNodeRule specifies that points are in the boundary of a lineal geometry iff the point lies on the boundary of an odd number of components.
BoundaryNodeRule.MonoValentEndPointBoundaryNodeRule	A BoundaryNodeRule which determines that only endpoints with valency of exactly 1 are on the boundary.
BoundaryNodeRule.MultiValentEndPointBoundaryNodeRule	A BoundaryNodeRule which determines that only endpoints with valency greater than 1 are on the boundary.
BoundaryOp	Computes the boundary of a Geometry.
BoundaryScanner	Finds fragment boundaries: pluggable into BaseFragmentsBuilder
BoundedBreakIteratorScanner	A custom break iterator that is used to find break-delimited passages bounded by a provided maximum length in the UnifiedHighlighter context.
BoundedProportionalArraySizingStrategy	Array resizing proportional to the current buffer size, optionally kept within the given minimum and maximum growth limits.
BoundTransportAddress	A bounded transport address is a tuple of TransportAddress, one array that represents the addresses the transport is bound to, and the other is the published one that represents the address clients should communicate on.
BreakerSettings	Settings for a CircuitBreaker
BreakIteratorBoundaryScanner	A BoundaryScanner implementation that uses BreakIterator to find boundaries in the text.
BroadcastOperationRequestBuilder<Request extends BroadcastRequest<Request>,Response extends BroadcastResponse,RequestBuilder extends BroadcastOperationRequestBuilder<Request,Response,RequestBuilder>>
BroadcastRequest<Request extends BroadcastRequest<Request>>
BroadcastResponse	Base class for all broadcast operation based responses.
BroadcastResponse	Represents a response to a request that is broadcast to a collection of shards.
BroadcastResponse.Shards	Represents the results of a collection of shards on which a request was executed against.
BroadcastShardOperationFailedException	An exception indicating that a failure occurred performing an operation on the shard.
BroadcastShardRequest
BroadcastShardResponse
Bucket	Bucket Result POJO
BucketAggregationScript	A script used in bucket aggregations that returns a double value.
BucketAggregationScript.Factory
BucketAggregationSelectorScript	A script used in bucket aggregations that returns a boolean value.
BucketAggregationSelectorScript.Factory
BucketCollector	A Collector that can collect data in separate buckets.
BucketHelpers	A set of static helpers to simplify working with aggregation buckets, in particular providing utilities that help pipeline aggregations.
BucketHelpers.GapPolicy	A gap policy determines how "holes" in a set of buckets should be handled.
BucketInfluencer
BucketMetricsParser	A parser for parsing requests for a BucketMetricsPipelineAggregator
BucketMetricsPipelineAggregationBuilder<AF extends BucketMetricsPipelineAggregationBuilder<AF>>
BucketMetricsPipelineAggregator	A class of sibling pipeline aggregations which calculate metrics across the buckets of a sibling aggregation
BucketMetricValue
BucketOrder	MultiBucketsAggregation.Bucket Ordering strategy.
BucketPriorityQueue<B extends Terms.Bucket>
BucketsAggregator
BucketScriptPipelineAggregationBuilder
BucketScriptPipelineAggregator
BucketSelectorPipelineAggregationBuilder
BucketSelectorPipelineAggregator
BucketSignificancePriorityQueue<B extends SignificantTerms.Bucket>
BucketSortPipelineAggregationBuilder	Builds a pipeline aggregation that allows sorting the buckets of its parent aggregation.
BucketSortPipelineAggregator
BucketUtils	Helper functions for common Bucketing functions
BufferAllocationException
BufferedChecksum	Wraps another Checksum with an internal buffer to speed up checksum calculations.
BufferedChecksumIndexInput	Simple implementation of ChecksumIndexInput that wraps another input and delegates calls.
BufferedChecksumStreamInput	Similar to Lucene's BufferedChecksumIndexInput, however this wraps a StreamInput so anything read will update the checksum
BufferedChecksumStreamOutput	Similar to Lucene's BufferedChecksumIndexOutput, however this wraps a StreamOutput so anything written will update the checksum
BufferedIndexInput	Base implementation class for buffered IndexInput.
BufferedLine	INTERNAL: A line between two points with a buffer distance extending in every direction.
BufferedLineString	A BufferedLineString is a collection of BufferedLine shapes, resulting in what some call a "Track" or "Polyline" (ESRI terminology).
BufferInputLineSimplifier	Simplifies a buffer input line to remove concavities with shallow depth.
BufferOp	Computes the buffer of a geometry, for both positive and negative buffer distances.
BufferParameters	A value class containing the parameters which specify how a buffer should be constructed.
Build	Information about a build of Elasticsearch.
Build.Flavor
Build.Type
Builder<T>	Builds a minimal FST (maps an IntsRef term to an arbitrary output) from pre-sorted terms with outputs.
Builder.Arc<T>	Expert: holds a pending (seen but not yet serialized) arc.
Builder.UnCompiledNode<T>	Expert: holds a pending (seen but not yet serialized) Node.
BulkAction
BulkByScrollResponse	Response used for actions that index many documents using a scroll request.
BulkByScrollTask	Task storing information about a currently running BulkByScroll request.
BulkByScrollTask.Status	Status of the reindex, update by query, or delete by query.
BulkByScrollTask.StatusBuilder	This class acts as a builder for BulkByScrollTask.Status.
BulkByScrollTask.StatusOrException	The status of a slice of the request.
BulkItemRequest
BulkItemResponse	Represents a single item response for an action executed as part of the bulk API.
BulkItemResponse.Failure	Represents a failure.
BulkRequest	A bulk request holds an ordered IndexRequests, DeleteRequests and UpdateRequests and allows to executes it in a single batch.
BulkRequestBuilder	A bulk request holds an ordered IndexRequests and DeleteRequests and allows to executes it in a single batch.
BulkRequestParser	Helper to parse bulk requests.
BulkResponse	A response of a bulk execution.
BulkScorer	This class is used to score a range of documents at once, and is returned by Weight.bulkScorer(org.apache.lucene.index.LeafReaderContext).
BulkShardRequest
BulkShardResponse
ByteArray	Abstraction of an array of byte values.
ByteArrayDataInput	DataInput backed by a byte array.
ByteArrayDataOutput	DataOutput backed by a byte array.
ByteArrayIndexInput	Wraps array of bytes into IndexInput
ByteArrayInStream	Allows an array of bytes to be used as an InStream.
ByteBlockPool	Class that Posting and PostingVector use to write byte streams into shared fixed-size byte[] arrays.
ByteBlockPool.Allocator	Abstract class for allocating and freeing byte blocks.
ByteBlockPool.DirectAllocator	A simple ByteBlockPool.Allocator that never recycles.
ByteBlockPool.DirectTrackingAllocator	A simple ByteBlockPool.Allocator that never recycles, but tracks how much total RAM is in use.
ByteBufferIndexInput	Base IndexInput implementation that uses an array of ByteBuffers to represent a file.
ByteBufferReference	This is a BytesReference backed by a ByteBuffer.
ByteBuffersDataInput	A DataInput implementing RandomAccessInput and reading data from a list of ByteBuffers.
ByteBuffersDataOutput	A DataOutput storing data in a list of ByteBuffers.
ByteBuffersDataOutput.ByteBufferRecycler	An implementation of a ByteBuffer allocation and recycling policy.
ByteBufferStreamInput
ByteOrderDataInStream	Allows reading a stream of Java primitive datatypes from an underlying InStream, with the representation being in either common byte ordering.
ByteOrderValues	Methods to read and write primitive Java datatypes from/to byte sequences, allowing the byte order to be specified
ByteRunAutomaton	Automaton representation for matching UTF-8 byte[].
BytesArray
BytesBinaryDVIndexFieldData
BytesBinaryDVIndexFieldData.Builder
ByteSequenceOutputs	An FST Outputs implementation where each output is a sequence of bytes.
ByteSizeUnit	A SizeUnit represents size at a given unit of granularity and provides utility methods to convert across units.
ByteSizeValue
BytesRef	Represents byte[], as a slice (offset + length) into an existing byte[].
BytesRefArray	A simple append only random-access BytesRef array that stores full copies of the appended bytes in a ByteBlockPool.
BytesRefBuilder	A builder for BytesRef instances.
BytesRefComparator	Specialized BytesRef comparator that SortableBytesRefArray.iterator(Comparator) has optimizations for.
BytesReference	A reference to bytes.
BytesRefFieldComparatorSource	Comparator source for string/binary values.
BytesRefFSTEnum<T>	Enumerates all input (BytesRef) + output pairs in an FST.
BytesRefFSTEnum.InputOutput<T>	Holds a single input (BytesRef) + output pair.
BytesRefHash	BytesRefHash is a special purpose hash-map like data-structure optimized for BytesRef instances.
BytesRefHash	Specialized hash table implementation similar to Lucene's BytesRefHash that maps BytesRef values to ids.
BytesRefHash.BytesStartArray	Manages allocation of the per-term addresses.
BytesRefHash.DirectBytesStartArray	A simple BytesRefHash.BytesStartArray that tracks memory allocation using a private Counter instance.
BytesRefHash.MaxBytesLengthExceededException	Thrown if a BytesRef exceeds the BytesRefHash limit of ByteBlockPool.BYTE_BLOCK_SIZE-2.
BytesRefIterator	A simple iterator interface for BytesRef iteration.
BytesRefIteratorTokenStream	A TokenStream used internally by PrefixTreeStrategy.
BytesRefs
BytesRestResponse
BytesStream
BytesStreamOutput	A @link StreamOutput that uses BigArrays to acquire pages of bytes, which avoids frequent reallocation & copying of the internal data.
BytesTermAttribute	This attribute can be used if you have the raw term bytes to be indexed.
BytesTransportRequest	A specialized, bytes only request, that can potentially be optimized on the network layer, specifically for the same large buffer send to several nodes.
ByteUtils	Utility methods to do byte-level encoding.
Cache<K,V>	A simple concurrent cache.
Cache.CacheStats
CacheBuilder<K,V>
CachedSupplier<T>	A Supplier that caches its return value.
CacheLoader<K,V>
CachingTokenFilter	This class can be used if the token attributes of a TokenStream are intended to be consumed more than once.
Calendar	A simple calendar object for scheduled (special) events.
CancelAllocationCommand	A command that cancels relocation, or recovery of a given shard on a node.
Cancellable	Represents an operation that can be cancelled.
CancellableCollector	Collector that checks if the task it is executed under is cancelled.
CancellableTask	A task that can be canceled
CancellableThreads	A utility class for multi threaded operation that needs to be cancellable via interrupts.
CancellableThreads.ExecutionCancelledException
CancellableThreads.Interruptible
CancellableThreads.IOInterruptible
CancellableThreads.OnCancel
CancelTasksAction	ActionType for cancelling running tasks
CancelTasksRequest	A request to cancel tasks
CancelTasksRequestBuilder	Builder for the request to cancel tasks running on the specified nodes
CancelTasksResponse	Returns the list of tasks that were cancelled
CandidateGenerator
Cardinality	An aggregation that computes approximate numbers of unique terms.
CardinalityAggregationBuilder
CartesianDistCalc	Calculates based on Euclidean / Cartesian 2d plane.
CascadedPolygonUnion	Provides an efficient method of unioning a collection of Polygonal geometries.
CategorizationAnalyzerConfig	Configuration for the categorization analyzer.
CategorizationAnalyzerConfig.Builder
CategorizationAnalyzerConfig.NameOrDefinition	Simple store of either a name of a built-in analyzer element or a custom definition.
CategoryContextMapping	A ContextMapping that uses a simple string as a criteria The suggestions are boosted and/or filtered by their associated category (string) value.
CategoryContextMapping.Builder	Builder for CategoryContextMapping
CategoryDefinition
CategoryQueryContext	Defines the query context for CategoryContextMapping
CategoryQueryContext.Builder
CcrClient	A wrapper for the RestHighLevelClient that provides methods for accessing the Elastic ccr related methods
CcrStatsRequest
CcrStatsResponse
Cell	Represents a grid cell.
CellCanPrune	Grid cells that share nothing with other cells when calling Cell.getNextLevelCells(Shape) might implement this interface.
CellIdSource	Wrapper class to help convert MultiGeoPointValues to numeric long values for bucketing.
CellIdSource.GeoPointLongEncoder	The encoder to use to convert a geopoint's (lon, lat, precision) into a long-encoded bucket key for aggregating.
CellIterator	An Iterator of SpatialPrefixTree Cells.
CellToBytesRefIterator	A reset'able BytesRefIterator wrapper around an Iterator of Cells.
Centroid	A single centroid which represents a number of data points.
Centroid	Computes the centroid of a Geometry of any dimension.
CertificateInfo	Simple model of an X.509 certificate
CGAlgorithms	Deprecated. See Length, Area, Distance, Orientation, PointLocation
CGAlgorithmsDD	Implements basic computational geometry algorithms using DD arithmetic.
ChangePasswordRequest	Request object to change the password of a user of a native realm or a built-in user.
ChannelActionListener<Response extends TransportResponse,Request extends TransportRequest>
ChannelFactory	only for testing until we have a disk-full FileSystem
Channels
CharacterRunAutomaton	Automaton representation for matching char[].
CharacterUtils	Utility class to write tokenizers or token filters.
CharacterUtils.CharacterBuffer	A simple IO buffer to use with CharacterUtils.fill(CharacterBuffer, Reader).
CharArr
CharArrayMap<V>	A simple class that stores key Strings as char[]'s in a hash table.
CharArrayMatcher	Matches a character array
CharArrays	Helper class similar to Arrays to handle conversions for Char arrays
CharArraySet	A simple class that stores Strings as char[]'s in a hash table.
CharFilter	Subclasses of CharFilter can be chained to filter a Reader They can be used as Reader with additional offset correction.
CharFilterFactory	Abstract parent class for analysis factories that create CharFilter instances.
CharFilterFactory
CharSequenceOutputs	An FST Outputs implementation where each output is a sequence of characters.
CharsRef	Represents char[], as a slice (offset + length) into an existing char[].
CharsRefBuilder	A builder for CharsRef instances.
CharStream	This interface describes a character stream that maintains line and column number positions of the characters.
CharTermAttribute	The term text of a Token.
CharTermAttributeImpl	Default implementation of CharTermAttribute.
CharTokenizer	An abstract base class for simple, character-oriented tokenizers.
CheckedBiConsumer<T,U,E extends Exception>	A BiConsumer-like interface which allows throwing checked exceptions.
CheckedConsumer<T,E extends Exception>	A Consumer-like interface which allows throwing checked exceptions.
CheckedFunction<T,R,E extends Exception>	A Function-like interface which allows throwing checked exceptions.
CheckedRunnable<E extends Exception>	A Runnable-like interface which allows throwing checked exceptions.
CheckedSupplier<R,E extends Exception>	A Supplier-like interface which allows throwing checked exceptions.
CheckForNull
CheckIndex	Basic tool and API to check the health of an index and write a new segments file that removes reference to problematic segments.
CheckIndex.Options	Run-time configuration options for CheckIndex commands.
CheckIndex.Status	Returned from CheckIndex.checkIndex() detailing the health and status of the index.
CheckIndex.Status.DocValuesStatus	Status from testing DocValues
CheckIndex.Status.FieldInfoStatus	Status from testing field infos.
CheckIndex.Status.FieldNormStatus	Status from testing field norms.
CheckIndex.Status.IndexSortStatus	Status from testing index sort
CheckIndex.Status.LiveDocStatus	Status from testing livedocs
CheckIndex.Status.PointsStatus	Status from testing PointValues
CheckIndex.Status.SegmentInfoStatus	Holds the status of each segment in the index.
CheckIndex.Status.StoredFieldStatus	Status from testing stored fields.
CheckIndex.Status.TermIndexStatus	Status from testing term index.
CheckIndex.Status.TermVectorStatus	Status from testing stored fields.
CheckIndex.VerifyPointsVisitor	Walks the entire N-dimensional points space, verifying that all points fall within the last cell's boundaries.
ChecksumBlobStoreFormat<T extends ToXContent>	Snapshot metadata file format used in v2.0 and above
ChecksumIndexInput	Extension of IndexInput, computing checksum as it goes.
ChildMemoryCircuitBreaker	Breaker that will check a parent's when incrementing
ChiSquare
ChiSquare.ChiSquareBuilder
ChunkingConfig	The description of how searches should be chunked.
ChunkingConfig.Mode
Circle	Circle geometry (not part of WKT standard, but used in elasticsearch) defined by lat/lon coordinates of the center in degrees and optional altitude in meters.
Circle	A circle, also known as a point-radius since that is what it is comprised of.
CircleBuilder
CircleImpl	A circle, also known as a point-radius, based on a DistanceCalculator which does all the work.
CircuitBreaker	Interface for an object that can be incremented, breaking after some configured limit has been reached.
CircuitBreaker.Durability
CircuitBreaker.Type
CircuitBreakerService	Interface for Circuit Breaker services, which provide breakers to classes that load field data.
CircuitBreakerStats	Class encapsulating stats about the circuit breaker
CircuitBreakingException	Exception thrown when the circuit breaker trips
Classes
ClassicAnalyzer	Filters ClassicTokenizer with ClassicFilter, LowerCaseFilter and StopFilter, using a list of English stop words.
ClassicFilter	Normalizes tokens extracted with ClassicTokenizer.
ClassicSimilarity	Expert: Historical scoring implementation.
ClassicTokenizer	A grammar-based tokenizer constructed with JFlex
CleanupRepositoryAction
CleanupRepositoryRequest
CleanupRepositoryRequestBuilder
CleanupRepositoryResponse
ClearIndicesCacheAction
ClearIndicesCacheRequest
ClearIndicesCacheRequestBuilder
ClearIndicesCacheResponse	The response of a clear cache action.
ClearRealmCacheRequest	Request for clearing the cache of one or more realms
ClearRealmCacheResponse	Response for a clear realm cache request.
ClearRolesCacheRequest	The request used to clear the cache for native roles stored in an index.
ClearRolesCacheResponse	The response object that will be returned when clearing the roles cache
ClearScrollAction
ClearScrollRequest
ClearScrollRequestBuilder
ClearScrollResponse
ClearVotingConfigExclusionsAction
ClearVotingConfigExclusionsRequest	A request to clear the voting config exclusions from the cluster state, optionally waiting for these nodes to be removed from the cluster first.
ClearVotingConfigExclusionsResponse	A response to ClearVotingConfigExclusionsRequest indicating that voting config exclusions have been cleared from the cluster state.
Client	A client provides a one stop interface for performing actions/operations against the cluster.
CloseableChannel
CloseableConnection	Abstract Transport.Connection that provides common close logic.
CloseableThreadLocal<T>	Java's builtin ThreadLocal has a serious flaw: it can take an arbitrarily long amount of time to dereference the things you had stored in it, even once the ThreadLocal instance itself is no longer referenced.
CloseIndexAction
CloseIndexClusterStateUpdateRequest	Cluster state update request that allows to close one or more indices
CloseIndexRequest	A request to close an index.
CloseIndexRequest	A request to close an index.
CloseIndexRequestBuilder	Builder for close index request
CloseIndexResponse
CloseIndexResponse
CloseIndexResponse.IndexResult
CloseIndexResponse.IndexResult
CloseIndexResponse.ShardResult
CloseIndexResponse.ShardResult
CloseIndexResponse.ShardResult.Failure
CloseIndexResponse.ShardResult.Failure
CloseJobRequest	Request to close Machine Learning Jobs
CloseJobResponse	Response indicating if the Job(s) closed or not
ClusterAdminClient	Administrative actions/operations against indices.
ClusterAllocationExplainAction	ActionType for explaining shard allocation for a shard in the cluster
ClusterAllocationExplainRequest	A request to explain the allocation of a shard in the cluster
ClusterAllocationExplainRequestBuilder	Builder for requests to explain the allocation of a shard in the cluster
ClusterAllocationExplainResponse	Explanation response for a shard in the cluster
ClusterAllocationExplanation	A ClusterAllocationExplanation is an explanation of why a shard is unassigned, or if it is not unassigned, then which nodes it could possibly be relocated to.
ClusterApplier
ClusterApplier.ClusterApplyListener	Listener for results of cluster state application
ClusterApplierService
ClusterBlock
ClusterBlockException
ClusterBlockLevel
ClusterBlocks	Represents current cluster level blocks to block dirty operations done against the cluster.
ClusterBlocks.Builder
ClusterBootstrapService
ClusterChangedEvent	An event received by the local node, signaling that the cluster state has changed.
ClusterClient	A wrapper for the RestHighLevelClient that provides methods for accessing the Cluster API.
ClusterFormationFailureHelper
ClusterGetSettingsRequest	This request is specific to the REST client.
ClusterGetSettingsResponse	This response is specific to the REST client.
ClusterHealthAction
ClusterHealthRequest
ClusterHealthRequest.Level
ClusterHealthRequestBuilder
ClusterHealthResponse
ClusterHealthStatus
ClusterIndexHealth
ClusterInfo	ClusterInfo is an object representing a map of nodes to DiskUsage and a map of shard ids to shard sizes, see InternalClusterInfoService.shardIdentifierFromRouting(String) for the key used in the shardSizes map
ClusterInfoRequest<Request extends ClusterInfoRequest<Request>>
ClusterInfoRequestBuilder<Request extends ClusterInfoRequest<Request>,Response extends ActionResponse,Builder extends ClusterInfoRequestBuilder<Request,Response,Builder>>
ClusterInfoService	Interface for a class used to gather information about a cluster periodically.
ClusterModule	Configures classes and services that affect the entire cluster.
ClusterName
ClusterNameExpressionResolver	Resolves cluster names from an expression.
ClusterPlugin	An extension point for Plugin implementations to customer behavior of cluster management.
ClusterRebalanceAllocationDecider	This AllocationDecider controls re-balancing operations based on the cluster wide active shard state.
ClusterRebalanceAllocationDecider.ClusterRebalanceType	An enum representation for the configured re-balance type.
ClusterRerouteAction
ClusterRerouteRequest	Request to submit cluster reroute allocation commands
ClusterRerouteRequestBuilder	Builder for a cluster reroute request
ClusterRerouteResponse	Response returned after a cluster reroute request
ClusterSearchShardsAction
ClusterSearchShardsGroup
ClusterSearchShardsRequest
ClusterSearchShardsRequestBuilder
ClusterSearchShardsResponse
ClusterService
ClusterSettings	Encapsulates all valid cluster level settings.
ClusterShardHealth
ClusterState	Represents the current state of the cluster.
ClusterState.Builder
ClusterState.Custom
ClusterState.FeatureAware	An interface that implementors use when a class requires a client to maybe have a feature.
ClusterState.Metric
ClusterStateAction
ClusterStateApplier	A component that is in charge of applying an incoming cluster state to the node internal data structures.
ClusterStateHealth
ClusterStateListener	A listener to be notified when a cluster state changes.
ClusterStateObserver	A utility class which simplifies interacting with the cluster state in cases where one tries to take action based on the current state but may want to wait for a new state and retry upon failure.
ClusterStateObserver.Listener
ClusterStatePublisher
ClusterStatePublisher.AckListener
ClusterStateRequest
ClusterStateRequestBuilder
ClusterStateResponse	The response for getting the cluster state.
ClusterStateTaskConfig	Cluster state update task configuration for timeout and priority
ClusterStateTaskConfig.Basic
ClusterStateTaskExecutor<T>
ClusterStateTaskExecutor.ClusterTasksResult<T>	Represents the result of a batched execution of cluster state update tasks
ClusterStateTaskExecutor.ClusterTasksResult.Builder<T>
ClusterStateTaskExecutor.TaskResult
ClusterStateTaskListener
ClusterStateUpdateRequest<T extends ClusterStateUpdateRequest<T>>	Base class to be used when needing to update the cluster state Contains the basic fields that are always needed
ClusterStateUpdateResponse	Base response returned after a cluster state update
ClusterStateUpdaters
ClusterStateUpdateTask	A task that can update the cluster state.
ClusterStatsAction
ClusterStatsIndices
ClusterStatsIndices.ShardStats
ClusterStatsNodeResponse
ClusterStatsNodes
ClusterStatsNodes.Counts
ClusterStatsNodes.JvmStats
ClusterStatsNodes.JvmVersion
ClusterStatsNodes.OsStats
ClusterStatsNodes.ProcessStats
ClusterStatsRequest	A request to get cluster level stats.
ClusterStatsRequestBuilder
ClusterStatsResponse
ClusterUpdateSettingsAction
ClusterUpdateSettingsRequest	Request for an update cluster settings action
ClusterUpdateSettingsRequestBuilder	Builder for a cluster update settings request
ClusterUpdateSettingsResponse	A response for a cluster update settings action.
Codec	Encodes/decodes an inverted index segment.
CodecReader	LeafReader implemented by codec APIs.
CodecService	Since Lucene 4.0 low level index segments are read and written through a codec layer that allows to use use-case specific file formats & data-structures per field.
CodecUtil	Utility class for reading and writing versioned headers.
CollapseBuilder	A builder that enables field collapsing on search request.
CollapseContext	Context used for field collapsing
CollapseTopFieldDocs	Represents hits returned by CollapsingTopDocsCollector.getTopDocs().
CollapsingTopDocsCollector<T>	A collector that groups documents based on field values and returns CollapseTopFieldDocs output.
CollectedSearchGroup<T>	Expert: representation of a group in FirstPassGroupingCollector, tracking the top doc and FieldComparator slot.
CollectionStatistics	Contains statistics for a collection (field).
CollectionTerminatedException	Throw this exception in LeafCollector.collect(int) to prematurely terminate collection of the current leaf.
CollectionUtil	Methods for manipulating (sorting) collections.
CollectionUtils	Collections-related utility methods.
Collector	Expert: Collectors are primarily meant to be used to gather raw results from a search, and implement sorting or custom result filtering, collation, etc.
CollectorManager<C extends Collector,T>	A manager of collectors.
CollectorResult	Public interface and serialization container for profiled timings of the Collectors used in the search.
CombinedBitSet	A BitSet implementation that combines two instances of BitSet and Bits to provide a single merged view.
CombinedDeletionPolicy	An IndexDeletionPolicy that coordinates between Lucene's commits and the retention of translog generation files, making sure that all translog files that are needed to recover from the Lucene commit are not deleted.
CombineFunction
CommandLineUtil	Class containing some useful methods used by command line tools
CommitStats	a class the returns dynamic information with respect to the last commit point of this shard
CommonBits	Determines the maximum number of common most-significant bits in the mantissa of one or numbers.
CommonBitsRemover	Removes common most-significant mantissa bits from one or more Geometrys.
CommonQueryParserConfiguration	Configuration options common across queryparser implementations.
CommonStats
CommonStatsFlags
CommonStatsFlags.Flag
CommonTermsQuery	A query that executes high-frequency terms in a optional sub-query to prevent slow queries due to "common" terms like stopwords.
CommonTermsQueryBuilder	Deprecated. Since max_optimization optimization landed in 7.0, normal MatchQuery will achieve the same result without any configuration.
Comparators	Comparator-related utility methods.
CompetitiveImpactAccumulator	This class accumulates the (freq, norm) pairs that may produce competitive scores.
CompiledAutomaton	Immutable class holding compiled details for a given Automaton.
CompiledAutomaton.AUTOMATON_TYPE	Automata are compiled into different internal forms for the most efficient execution depending upon the language they accept.
CompletableContext<T>	A thread-safe completable context that allows listeners to be attached.
Completion50PostingsFormat	CompletionPostingsFormat for org.apache.lucene.codecs.lucene50.Lucene50PostingsFormat.
CompletionAnalyzer	Wraps an Analyzer to provide additional completion-only tuning (e.g.
CompletionFieldMapper	Mapper for completion field.
CompletionFieldMapper.Builder	Builder for CompletionFieldMapper
CompletionFieldMapper.CompletionFieldType
CompletionFieldMapper.Defaults
CompletionFieldMapper.Fields
CompletionFieldMapper.TypeParser
CompletionPersistentTaskAction	ActionType that is used by executor node to indicate that the persistent action finished or failed on the node and needs to be removed from the cluster state in case of successful completion or restarted on some other node in case of failure.
CompletionPersistentTaskAction.Request
CompletionPersistentTaskAction.RequestBuilder
CompletionPersistentTaskAction.TransportAction
CompletionPostingsFormat	A PostingsFormat which supports document suggestion based on indexed SuggestFields.
CompletionPostingsFormat.FSTLoadMode	An enum that allows to control if suggester FSTs are loaded into memory or read off-heap
CompletionQuery	Abstract Query that match documents containing terms with a specified prefix filtered by BitsProducer.
CompletionScorer	Expert: Responsible for executing the query against an appropriate suggester and collecting the results via a collector.
CompletionStats
CompletionsTermsReader	Holder for suggester and field-level info for a suggest field
CompletionSuggester
CompletionSuggestion	Suggestion response for CompletionSuggester results Response format for each entry: { "text" : STRING "score" : FLOAT "contexts" : CONTEXTS } CONTEXTS : { "CONTEXT_NAME" : ARRAY, ..
CompletionSuggestion.Entry
CompletionSuggestion.Entry.Option
CompletionSuggestionBuilder	Defines a suggest command based on a prefix, typically to provide "auto-complete" functionality for users as they type search terms.
CompletionSuggestionContext
CompletionTerms	Wrapped Terms used by SuggestField and ContextSuggestField to access corresponding suggester and their attributes
CompletionTokenStream	A ConcatenateGraphFilter but we can set the payload and provide access to config options.
CompletionWeight	Expert: the Weight for CompletionQuery, used to score and explain these queries.
Component2D	2D Geometry object that supports spatial relationships with bounding boxes, triangles and points.
Component2D.WithinRelation	Used by withinTriangle to check the within relationship between a triangle and the query shape (e.g.
ComponentCoordinateExtracter	Extracts a single representative Coordinate from each connected component of a Geometry.
CompositeAggregation
CompositeAggregation.Bucket
CompositeAggregationBuilder
CompositeBytesReference	A composite BytesReference that allows joining multiple bytes references into one without copying.
CompositeIndicesRequest	Marker interface that needs to be implemented by all ActionRequest subclasses that are composed of multiple sub-requests which relate to one or more indices.
CompositeReader	Instances of this reader type can only be used to get stored fields from the underlying LeafReaders, but it is not possible to directly retrieve postings.
CompositeReaderContext	IndexReaderContext for CompositeReader instance.
CompositeRoleMapperExpression	Expression of role mapper expressions which can be combined by operators like AND, OR
CompositeType
CompositeValuesSourceBuilder<AB extends CompositeValuesSourceBuilder<AB>>	A ValuesSource builder for CompositeAggregationBuilder
CompositeValuesSourceParserHelper
CompoundFormat	Encodes/decodes compound files
CompoundProcessor	A Processor that executes a list of other "processors".
CompressedXContent	Similar class to the String class except that it internally stores data using a compressed representation in order to require less permanent memory.
CompressingStoredFieldsFormat	A StoredFieldsFormat that compresses documents in chunks in order to improve the compression ratio.
CompressingStoredFieldsIndexReader	Random-access reader for CompressingStoredFieldsIndexWriter.
CompressingStoredFieldsIndexWriter	Efficient index format for block-based Codecs.
CompressingStoredFieldsReader	StoredFieldsReader impl for CompressingStoredFieldsFormat.
CompressingStoredFieldsWriter	StoredFieldsWriter impl for CompressingStoredFieldsFormat.
CompressingTermVectorsFormat	A TermVectorsFormat that compresses chunks of documents together in order to improve the compression ratio.
CompressingTermVectorsReader	TermVectorsReader for CompressingTermVectorsFormat.
CompressingTermVectorsWriter	TermVectorsWriter for CompressingTermVectorsFormat.
CompressionMode	A compression mode.
Compressor	A data compressor.
Compressor
CompressorFactory
ConcatenateGraphFilter	Concatenates/Joins every incoming token with a separator into one output token for every path through the token stream (which is a graph).
ConcatenateGraphFilter.BytesRefBuilderTermAttribute	Attribute providing access to the term builder and UTF-16 conversion
ConcatenateGraphFilter.BytesRefBuilderTermAttributeImpl	Implementation of ConcatenateGraphFilter.BytesRefBuilderTermAttribute
ConcurrentCollections
ConcurrentDequeRecycler<T>	A Recycler implementation based on a concurrent Deque.
ConcurrentHashMapLong<T>
ConcurrentHistogram	An integer values High Dynamic Range (HDR) Histogram that supports safe concurrent recording operations.
ConcurrentMapLong<T>
ConcurrentMergeScheduler	A MergeScheduler that runs each merge using a separate thread.
ConcurrentRebalanceAllocationDecider	Similar to the ClusterRebalanceAllocationDecider this AllocationDecider controls the number of currently in-progress re-balance (relocation) operations and restricts node allocations if the configured threshold is reached.
ConcurrentSnapshotExecutionException	Thrown when a user tries to multiple conflicting snapshot/restore operations at the same time.
Condition<T>	Base class for rollover request conditions
Condition.Result	Holder for evaluated condition result
Condition.Stats	Holder for index stats used to evaluate conditions
ConditionalProcessor
ConfigurationException	Thrown when a programming error such as a misplaced annotation, illegal binding, or unsupported scope is found.
ConfigurationUtils
ConjunctionDISI	A conjunction of DocIdSetIterators.
ConnectedElementLocationFilter	A ConnectedElementPointFilter extracts a single point from each connected element in a Geometry (e.g.
ConnectedInteriorTester	This class tests that the interior of an area Geometry ( Polygon or MultiPolygon ) is connected.
Connection	A Connection links exactly two Vertex objects.
Connection.ConnectionId	An identifier (implements hashcode and equals) that represents a unique key for a Connection
ConnectionManager	This class manages node connections.
ConnectionManager.ConnectionValidator
ConnectionProfile	A connection profile describes how many connection are established to specific node for each of the available request types.
ConnectionProfile.Builder	A builder to build a new ConnectionProfile
ConnectTransportException
ConsistentAreaTester	Checks that a GeometryGraph representing an area (a Polygon or MultiPolygon ) has consistent semantics for area geometries.
ConsistentSettingsService	Used to publish secure setting hashes in the cluster state and to validate those hashes against the local values of those same settings.
ConsoleCtrlHandler
ConstantBindingBuilder	Binds to a constant value.
ConstantBindingBuilderImpl<T>	Bind a constant.
ConstantIndexFieldData
ConstantIndexFieldData.Builder
Constants	Some useful constants.
ConstantScoreQuery	A query that wraps another query and simply returns a constant score equal to 1 for every document that matches the query.
ConstantScoreQuery.ConstantBulkScorer	We return this as our BulkScorer so that if the CSQ wraps a query with its own optimized top-level scorer (e.g.
ConstantScoreQueryBuilder	A query that wraps a filter and simply returns a constant score equal to the query boost for every document in the filter.
ConstantScoreScorer	A constant-scoring Scorer.
ConstantScoreWeight	A Weight that has a constant score equal to the boost of the wrapped query.
ConstructingObjectParser<Value,Context>	Like ObjectParser but works with objects that have constructors whose arguments are mixed in with its other settings.
ConstructionContext<T>	Context of a dependency construction.
ConstructorBinding<T>	A binding to the constructor of a concrete clss.
Containers	Constants used as defaults in containers.
ContainsPrefixTreeQuery	Finds docs where its indexed shape CONTAINS the query shape.
ContentPath
ContextBuilder<E extends ContextMapping<?>>	Builder for ContextMapping
ContextIndexSearcher	Context-aware extension of IndexSearcher.
ContextMapping<T extends ToXContent>	A ContextMapping defines criteria that can be used to filter and/or boost suggestions at query time for CompletionFieldMapper.
ContextMapping.InternalQueryContext
ContextMapping.Type
ContextMappings	ContextMappings indexes context-enabled suggestion fields and creates context queries for defined ContextMappings for a CompletionFieldMapper
ContextParser<Context,T>	Reads an object from a parser using some context.
ContextPreservingActionListener<R>	Restores the given ThreadContext.StoredContext once the listener is invoked
ContextQuery	A CompletionQuery that matches documents specified by a wrapped CompletionQuery supporting boosting and/or filtering by specified contexts.
ContextSuggestField	SuggestField which additionally takes in a set of contexts.
ConvertedConstantBinding<T>	A binding created from converting a bound instance to a new type.
ConvexHull	Computes the convex hull of a Geometry.
Coordinate	A lightweight class used to store coordinates on the 2-dimensional Cartesian plane.
Coordinate.DimensionalComparator	Compares two Coordinates, allowing for either a 2-dimensional or 3-dimensional comparison, and handling NaN values correctly.
CoordinateArrays	Useful utility functions for handling Coordinate arrays
CoordinateArrays.BidirectionalComparator	A Comparator for Coordinate arrays modulo their directionality.
CoordinateArrays.ForwardComparator	A Comparator for Coordinate arrays in the forward direction of their coordinates, using lexicographic ordering.
CoordinateArraySequence	A CoordinateSequence backed by an array of Coordinates.
CoordinateArraySequenceFactory	Creates CoordinateSequences represented as an array of Coordinates.
CoordinateFilter	An interface for classes which use the values of the coordinates in a Geometry.
CoordinateList	A list of Coordinates, which may be set to prevent repeated coordinates from occurring in the list.
CoordinateNode	Node used to represent a tree of coordinates.
Coordinates	Useful utility functions for handling Coordinate objects.
CoordinatesBuilder	A builder for a list of coordinates.
CoordinateSequence	The internal representation of a list of coordinates inside a Geometry.
CoordinateSequenceComparator	Compares two CoordinateSequences.
CoordinateSequenceFactory	A factory to create concrete instances of CoordinateSequences.
CoordinateSequenceFilter	An interface for classes which process the coordinates in a CoordinateSequence.
CoordinateSequences	Utility functions for manipulating CoordinateSequences
CoordinateXY	Coordinate subclass supporting XY ordinates.
CoordinateXYM	Coordinate subclass supporting XYM ordinates.
CoordinateXYZM	Coordinate subclass supporting XYZM ordinates.
CoordinationMetaData
CoordinationMetaData.Builder
CoordinationMetaData.VotingConfigExclusion
CoordinationMetaData.VotingConfiguration	A collection of persistent node ids, denoting the voting configuration for cluster state changes.
CoordinationState	The core class of the cluster state coordination algorithm, directly implementing the formal model
CoordinationState.PersistedState	Pluggable persistence layer for CoordinationState.
CoordinationState.VoteCollection	A collection of votes, used to calculate quorums.
CoordinationStateRejectedException	This exception is thrown when rejecting state transitions on the CoordinationState object, for example when receiving a publish request with the wrong term or version.
Coordinator
Coordinator.Mode
CopyOnWriteHashMap<K,V>	An immutable map whose writes result in a new copy of the map to be created.
Correction
CorruptIndexException	This exception is thrown when Lucene detects an inconsistency in the index.
CorruptStateException	This exception is thrown when Elasticsearch detects an inconsistency in one of it's persistent states.
CountDown	A simple thread safe count-down class that in contrast to a CountDownLatch never blocks.
CountedBitSet	A CountedBitSet wraps a FixedBitSet but automatically releases the internal bitset when all bits are set to reduce memory usage.
Counter	Simple counter class
CounterMetric
CountRequest	Encapsulates a request to _count API against one, several or all indices.
CountResponse	A response to _count API request.
CountResponse.ShardStats	Encapsulates _shards section of count api response.
CoveringQuery	A Query that allows to have a configurable number or required matches per document.
CreateApiKeyRequest	Request to create API key
CreateApiKeyResponse	Response for create API key
CreateIndexAction
CreateIndexClusterStateUpdateRequest	Cluster state update request that allows to create an index
CreateIndexClusterStateUpdateResponse	A cluster state update response with specific fields for index creation.
CreateIndexRequest	A request to create an index.
CreateIndexRequest	A request to create an index.
CreateIndexRequestBuilder	Builder for a create index request
CreateIndexResponse	A response for a create index action.
CreateIndexResponse	A response for a create index action.
CreateSnapshotAction	Create snapshot action
CreateSnapshotRequest	Create snapshot request
CreateSnapshotRequestBuilder	Create snapshot request builder
CreateSnapshotResponse	Create snapshot response
CreateTokenRequest	Request to create a new OAuth2 token from the Elasticsearch cluster.
CreateTokenResponse	Response when creating a new OAuth2 token in the Elasticsearch cluster.
CreationException	Thrown when errors occur while creating a Injector.
CuckooFilter	An approximate set membership datastructure CuckooFilters are similar to Bloom Filters in usage; values are inserted, and the Cuckoo can be asked if it has seen a particular value before.
CumulativeSumPipelineAggregationBuilder
CumulativeSumPipelineAggregator
CustomAnalyzer
CustomAnalyzerProvider	A custom analyzer that is built out of a single Tokenizer and a list of TokenFilters.
CustomDocValuesField
CustomFieldQuery
CustomFieldsVisitor	A field visitor that allows to load a selection of the stored fields by exact name or by pattern.
CustomNormalizerProvider	A custom normalizer that is built out of a char and token filters.
CustomPassageFormatter	Custom passage formatter that allows us to: 1) extract different snippets (instead of a single big string) together with their scores (Snippet) 2) use the Encoder implementations that are already used with the other highlighters
CustomQueryScorer
CustomSeparatorBreakIterator	A BreakIterator that breaks the text whenever a certain separator, provided as a constructor argument, is found.
CustomUnifiedHighlighter	Subclass of the UnifiedHighlighter that works for a single field in a single document.
DaciukMihovAutomatonBuilder	Builds a minimal, deterministic Automaton that accepts a set of strings.
DanglingIndicesState	The dangling indices state is responsible for finding new dangling indices (indices that have their state written on disk, but don't exists in the metadata of the cluster), and importing them into the cluster.
DataCounts	Job processed record counts.
DataDescription	Describes the format of the data used in the job and how it should be interpreted by the ML job.
DataDescription.Builder
DataDescription.DataFormat	Enum of the acceptable data formats.
DatafeedConfig	The datafeed configuration object.
DatafeedConfig.Builder
DatafeedState	Datafeed State POJO
DatafeedStats	Datafeed Statistics POJO
DatafeedTimingStats
DatafeedUpdate	A datafeed update contains partial properties to update a DatafeedConfig.
DatafeedUpdate.Builder
DataFrameAnalysis
DataFrameAnalyticsConfig
DataFrameAnalyticsConfig.Builder
DataFrameAnalyticsDest
DataFrameAnalyticsDest.Builder
DataFrameAnalyticsSource
DataFrameAnalyticsSource.Builder
DataFrameAnalyticsState
DataFrameAnalyticsStats
DataInput	Abstract base class for performing read operations of Lucene's low-level data types.
DataOutput	Abstract base class for performing write operations of Lucene's low-level data types.
DateFieldMapper	A FieldMapper for dates.
DateFieldMapper.Builder
DateFieldMapper.DateFieldType
DateFieldMapper.Defaults
DateFieldMapper.Resolution
DateFieldMapper.TypeParser
DateFormatter
DateFormatters
DateHistogramAggregationBuilder	A builder for histograms on date fields.
DateHistogramAggregatorFactory
DateHistogramGroupConfig	The configuration object for the histograms in the rollup config { "groups": [ "date_histogram": { "field" : "foo", "interval" : "1d", "delay": "30d", "time_zone" : "EST" } ] }
DateHistogramGroupConfig.CalendarInterval	CalendarInterval is a DateHistogramGroupConfig that uses calendar-aware intervals for rolling up data.
DateHistogramGroupConfig.FixedInterval	FixedInterval is a DateHistogramGroupConfig that uses a fixed time interval for rolling up data.
DateHistogramGroupSource	A grouping via a date histogram aggregation referencing a timefield
DateHistogramGroupSource.Builder
DateHistogramGroupSource.CalendarInterval
DateHistogramGroupSource.FixedInterval
DateHistogramGroupSource.Interval	Interval can be specified in 2 ways: fixed_interval fixed intervals like 1h, 1m, 1d calendar_interval calendar aware intervals like 1M, 1Y, ...
DateHistogramInterval	The interval the date histogram is based on.
DateHistogramValuesSourceBuilder	A CompositeValuesSourceBuilder that builds a RoundingValuesSource from a Script or a field name using the provided interval.
DateIntervalConsumer<T>	A shared interface for aggregations that parse and use "interval" parameters.
DateIntervalWrapper	A class that handles all the parsing, bwc and deprecations surrounding date histogram intervals.
DateIntervalWrapper.IntervalTypeEnum
DatelineRule	Indicates the algorithm used to process JTS Polygons and JTS LineStrings for detecting dateline (aka anti-meridian) crossings.
DateMathParser	An abstraction over date math parsing to allow different implementation for joda and java time.
DateRangeAggregationBuilder
DateRangeAggregatorFactory
DateTools	Provides support for converting dates to strings and vice-versa.
DateTools.Resolution	Specifies the time granularity.
DateUtils
DD	Implements extended-precision floating-point numbers which maintain 106 bits (approximately 30 decimal digits) of precision.
DeactivateWatchRequest
DeactivateWatchResponse
DecayFunction	Implement this interface to provide a decay function that is executed on a distance.
DecayFunctionBuilder<DFB extends DecayFunctionBuilder<DFB>>
DecayFunctionBuilder.AbstractDistanceScoreFunction	This is the base class for scoring a single field.
DecayFunctionParser<DFB extends DecayFunctionBuilder<DFB>>	Parser used for all decay functions, one instance each.
Decision	This abstract class defining basic Decision used during shard allocation process.
Decision.Multi	Simple class representing a list of decisions
Decision.Single	Simple class representing a single decision
Decision.Type	This enumeration defines the possible types of decisions
Decompressor	A decompressor.
DeDuplicatingTokenFilter	Inspects token streams for duplicate sequences of tokens.
DefaultBindingScopingVisitor<V>	No-op visitor for subclassing.
DefaultDetectorDescription
DefaultElementVisitor<V>	No-op visitor for subclassing.
DefaultEncoder	Simple Encoder implementation that does not modify the output
DefaultPassageFormatter	Creates a formatted snippet from the top passages.
DefaultShardOperationFailedException
DeferableBucketAggregator
DeferringBucketCollector	A BucketCollector that records collected doc IDs and buckets and allows to replay a subset of the collected buckets.
DeflateCompressor	Compressor implementation based on the DEFLATE compression algorithm.
DelayedAllocationService	The DelayedAllocationService listens to cluster state changes and checks if there are unassigned shards with delayed allocation (unassigned shards that have the delay marker).
DelayedDataCheckConfig	The configuration object containing the delayed data check settings.
DelayRecoveryException	An exception marking that this recovery attempt should be ignored (since probably, we already recovered).
DelegatePkiAuthenticationRequest
DelegatePkiAuthenticationResponse
DelegatingAnalyzerWrapper	An analyzer wrapper, that doesn't allow to wrap components or readers.
DeleteAction
DeleteAction
DeleteAutoFollowPatternRequest
DeleteByQueryRequest	Creates a new DeleteByQueryRequest that uses scrolling and bulk requests to delete all documents matching the query.
DeleteCalendarEventRequest	Request class for removing an event from an existing calendar
DeleteCalendarJobRequest	Request class for removing Machine Learning Jobs from an existing calendar
DeleteCalendarRequest	Request to delete a Machine Learning Calendar
DeleteDatafeedRequest	Request to delete a Machine Learning Datafeed via its ID
DeleteDataFrameAnalyticsRequest	Request to delete a data frame analytics config
DeleteExpiredDataRequest	Request to delete expired model snapshots and forecasts
DeleteExpiredDataResponse	A response acknowledging the deletion of expired data
DeleteFilterRequest	A request to delete a machine learning filter
DeleteForecastRequest	POJO for a delete forecast request
DeleteIndexAction
DeleteIndexClusterStateUpdateRequest	Cluster state update request that allows to close one or more indices
DeleteIndexRequest	A request to delete an index.
DeleteIndexRequestBuilder
DeleteIndexTemplateAction
DeleteIndexTemplateRequest	A request to delete an index template.
DeleteIndexTemplateRequestBuilder
DeleteJobRequest	Request to delete a Machine Learning Job via its ID
DeleteJobResponse	Response object that contains the acknowledgement or the task id depending on whether the delete job action was requested to wait for completion.
DeleteLicenseRequest
DeleteLifecyclePolicyRequest
DeleteModelSnapshotRequest	Request to delete a Machine Learning Model Snapshot Job via its Job and Snapshot IDs
DeletePipelineAction
DeletePipelineRequest
DeletePipelineRequestBuilder
DeletePipelineTransportAction
DeletePolicyRequest
DeletePrivilegesRequest	A request to delete application privileges
DeletePrivilegesResponse	Response for application privileges deletion
DeleteRepositoryAction	Unregister repository action
DeleteRepositoryRequest	Unregister repository request.
DeleteRepositoryRequestBuilder	Builder for unregister repository request
DeleteRequest	A request to delete a document from an index based on its type and id.
DeleteRequestBuilder	A delete document action request builder.
DeleteResponse	The response of the delete action.
DeleteResponse.Builder	Builder class for DeleteResponse.
DeleteResult	The result of deleting multiple blobs from a BlobStore.
DeleteRoleMappingRequest	Request object to delete a role mapping.
DeleteRoleMappingResponse	Response when deleting a role mapping.
DeleteRoleRequest	A request delete a role from the security index
DeleteRoleResponse	Response for a role being deleted from the native realm
DeleteRollupJobRequest
DeleteSnapshotAction	Delete snapshot action
DeleteSnapshotLifecyclePolicyRequest
DeleteSnapshotRequest	Delete snapshot request
DeleteSnapshotRequestBuilder	Delete snapshot request builder
DeleteStoredScriptAction
DeleteStoredScriptRequest
DeleteStoredScriptRequestBuilder
DeleteTransformRequest	Request to delete a transform
DeleteUserRequest	A request to delete a user from the native realm.
DeleteUserResponse	Response for a user being deleted from the native realm
DeleteWatchRequest	A delete watch request to delete an watch by name (id)
DeleteWatchResponse
Dependency<T>	A variable that can be resolved by an injector.
DeprecatedMessage	A logger message used by DeprecationLogger.
DeprecationHandler	Callback for notifying the creator of the XContentParser that parsing hit a deprecated field.
DeprecationInfoRequest
DeprecationInfoResponse
DeprecationInfoResponse.DeprecationIssue	Information about deprecated items
DeprecationInfoResponse.DeprecationIssue.Level
DeprecationLogger	A logger that logs deprecation notices.
DeprecationMap
DeprecationRestHandler	DeprecationRestHandler provides a proxy for any existing RestHandler so that usage of the handler can be logged using the DeprecationLogger.
Depth	A Depth object records the topological depth of the sides of an Edge for up to two Geometries.
DequeRecycler<T>	A Recycler implementation based on a Deque.
Derivative
DerivativePipelineAggregationBuilder
DerivativePipelineAggregator
DestConfig	Configuration containing the destination index for the TransformConfig
DestConfig.Builder
DestructiveOperations	Helper for dealing with destructive operations and wildcard usage.
DetailAnalyzeResponse
DetailAnalyzeResponse.AnalyzeTokenList
DetailAnalyzeResponse.CharFilteredText
DetectionRule
DetectionRule.Builder
Detector	Defines the fields and functions used in the analysis.
Detector.Builder
Detector.ExcludeFrequent
DetectorFunction
DFISimilarity	Implements the Divergence from Independence (DFI) model based on Chi-square statistics (i.e., standardized Chi-squared distance from independence in term frequency tf).
DFRSimilarity	Implements the divergence from randomness (DFR) framework introduced in Gianni Amati and Cornelis Joost Van Rijsbergen.
DfsPhase	Dfs phase of a search request, used to make scoring 100% accurate by collecting additional info from each shard before the query phase.
DfsPhaseExecutionException
DfsSearchResult
Dictionary	In-memory structure for the dictionary (.dic) and affix (.aff) data of a hunspell dictionary.
Dictionary	A simple interface representing a Dictionary.
Diff<T>	Represents difference between states of cluster state parts
Diffable<T>	Cluster state part, changes in which can be serialized
DiffableStringMap	This is a Map<String, String> that implements AbstractDiffable so it can be used for cluster state purposes
DiffableStringMap.DiffableStringMapDiff	Represents differences between two DiffableStringMaps.
DiffableUtils
DiffableUtils.DiffableValueReader<K,V extends Diffable<V>>	Implementation of the ValueSerializer that wraps value and diff readers.
DiffableUtils.DiffableValueSerializer<K,V extends Diffable<V>>	Serializer for Diffable map values.
DiffableUtils.ImmutableOpenMapDiff<K,T>	Represents differences between two ImmutableOpenMap of (possibly diffable) objects
DiffableUtils.KeySerializer<K>	Provides read and write operations to serialize keys of map
DiffableUtils.MapDiff<K,T,M>	Represents differences between two maps of objects and is used as base class for different map implementations.
DiffableUtils.NonDiffableValueSerializer<K,V>	Serializer for non-diffable map values
DiffableUtils.StringSetValueSerializer<K>	Implementation of ValueSerializer that serializes immutable sets
DiffableUtils.ValueSerializer<K,V>	Provides read and write operations to serialize map values.
Dimension	Provides constants representing the dimensions of a point, a curve and a surface.
DirectCandidateGenerator
DirectCandidateGenerator.Candidate
DirectCandidateGenerator.CandidateSet
DirectCandidateGenerator.TokenConsumer
DirectCandidateGeneratorBuilder
DirectedEdge
DirectedEdge	Represents a directed edge in a PlanarGraph.
DirectedEdgeStar	A DirectedEdgeStar is an ordered list of outgoing DirectedEdges around a node.
DirectedEdgeStar	A sorted collection of DirectedEdges which leave a Node in a PlanarGraph.
Directory	A Directory provides an abstraction layer for storing a list of files.
DirectoryReader	DirectoryReader is an implementation of CompositeReader that can read indexes in a Directory.
DirectoryService
DirectSpellChecker	Simple automaton-based spellchecker.
DirectSpellChecker.ScoreTerm	Holds a spelling correction for internal usage inside DirectSpellChecker.
DirectSpellcheckerSettings
DisabledQueryCache
DisableGraphAttribute	This attribute can be used to indicate that the PositionLengthAttribute should not be taken in account in this TokenStream.
DisableUserRequest	Request object to disable a native realm or built-in user.
Discovery	A pluggable module allowing to implement discovery of other nodes, publishing of the cluster state to all nodes, electing a master of the cluster that raises cluster state change events.
DiscoveryModule	A module for loading classes for node discovery.
DiscoveryNode	A discovery node represents a node that is part of the cluster.
DiscoveryNodeFilters
DiscoveryNodeFilters.OpType
DiscoveryNodeRole	Represents a node role.
DiscoveryNodes	This class holds all DiscoveryNode in the cluster and provides convenience methods to access, modify merge / diff discovery nodes.
DiscoveryNodes.Builder
DiscoveryNodes.Delta
DiscoveryPlugin	An additional extension point for Plugins that extends Elasticsearch's discovery functionality.
DiscoverySettings	Exposes common discovery settings that may be supported by all the different discovery implementations
DiscoveryStats
DiscoveryUpgradeService	Deals with rolling upgrades of the cluster coordination layer.
DisiPriorityQueue	A priority queue of DocIdSetIterators that orders by current doc ID.
DisiWrapper	Wrapper used in DisiPriorityQueue.
DisjunctionDISIApproximation	A DocIdSetIterator which is a disjunction of the approximations of the provided iterators.
DisjunctionMaxQuery	A query that generates the union of documents produced by its subqueries, and that scores each document with the maximum score for that document as produced by any subquery, plus a tie breaking increment for any additional matching subqueries.
DiskThresholdDecider	The DiskThresholdDecider checks that the node a shard is potentially being allocated to has enough disk space.
DiskThresholdMonitor	Listens for a node to go over the high watermark and kicks off an empty reroute if it does.
DiskThresholdSettings	A container to keep settings for disk thresholds up to date with cluster setting changes.
DiskUsage	Encapsulation class used to represent the amount of disk used on a node.
DisMaxQueryBuilder	A query that generates the union of documents produced by its sub-queries, and that scores each document with the maximum score for that document as produced by any sub-query, plus a tie breaking increment for any additional matching sub-queries.
Distance	Functions to compute distance between basic geometric structures.
DistanceCalculator	Performs calculations relating to distance, such as the distance between a pair of points.
DistanceFeatureQueryBuilder	A query to boost scores based on their proximity to the given origin for date, date_nanos and geo_point field types
DistanceFeatureQueryBuilder.Origin
DistanceOp	Find two points on two Geometrys which lie within a given distance, or else are the nearest points on the geometries (in which case this also provides the distance between the geometries).
DistanceUnit	The DistanceUnit enumerates several units for measuring distances.
DistanceUnit.Distance	This class implements a value+unit tuple.
DistanceUtils	Various distance calculations and constants.
Distribution	The probabilistic distribution used to model term occurrence in information-based models.
DistributionLL	Log-logistic distribution.
DistributionSPL	The smoothed power-law (SPL) distribution for the information-based framework that is described in the original paper.
DiversifiedAggregationBuilder
DiversifiedAggregatorFactory
DiversifiedBytesHashSamplerAggregator	Alternative, faster implementation for converting String keys to longs but with the potential for hash collisions.
DiversifiedMapSamplerAggregator
DiversifiedNumericSamplerAggregator
DiversifiedOrdinalsSamplerAggregator
DiversifiedTopDocsCollector	A TopDocsCollector that controls diversity in results by ensuring no more than maxHitsPerKey results from a common source are collected in the final results.
DiversifiedTopDocsCollector.ScoreDocKey	An extension to ScoreDoc that includes a key used for grouping purposes
DocIDMerger<T extends DocIDMerger.Sub>	Utility class to help merging documents from sub-readers according to either simple concatenated (unsorted) order, or by a specified index-time sort, skipping deleted documents and remapping non-deleted documents.
DocIDMerger.Sub	Represents one sub-reader being merged
DocIdSet	A DocIdSet contains a set of doc ids.
DocIdSetBuilder	A builder of DocIdSets.
DocIdSetBuilder.BulkAdder	Utility class to efficiently add many docs in one go.
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
DocLookup
DocsStats
Document	Documents are the unit of indexing and search.
DocumentField	A single field name and values part of SearchHit and GetResult.
DocumentFieldMappers
DocumentMapper
DocumentMapper.Builder
DocumentMapperForType
DocumentMapperParser
DocumentMissingException
DocumentSourceMissingException
DocumentStoredFieldVisitor	A StoredFieldVisitor that creates a Document from stored fields.
DocValueBits
DocValueFieldsContext	All the required context to pull a field from the doc values.
DocValueFieldsContext.FieldAndFormat	Wrapper around a field name and the format that should be used to display values of this field.
DocValueFieldsFetchSubPhase	Query sub phase which pulls data from doc values Specifying "docvalue_fields": ["field1", "field2"]
DocValueFormat	A formatter for values as returned by the fielddata/doc-values APIs.
DocValueFormat.DateTime
DocValueFormat.Decimal
DocValues	This class contains utility methods and constants for DocValues
DocValuesConsumer	Abstract API that consumes numeric, binary and sorted docvalues.
DocValuesFieldExistsQuery	A Query that matches documents that have a value for a given field as reported by doc values iterators.
DocValuesFormat	Encodes/decodes per-document values.
DocValuesIndexFieldData	IndexFieldData impl based on Lucene's doc values.
DocValuesIndexFieldData.Builder
DocValuesProducer	Abstract API that produces numeric, binary, sorted, sortedset, and sortednumeric docvalues.
DocValuesSliceQuery	A SliceQuery that uses the numeric doc values of a field to do the slicing.
DocValuesType	DocValues types.
DocWriteRequest<T>	Generic interface to group ActionRequest, which perform writes to a single document Action requests implementing this can be part of BulkRequest
DocWriteRequest.OpType	Requested operation type to perform on the document
DocWriteResponse	A base class for the response of a write operation that involves a single doc
DocWriteResponse.Builder	Base class of all DocWriteResponse builders.
DocWriteResponse.Result	An enum that represents the results of CRUD operations, primarily used to communicate the type of operation that occurred.
DoubleAllValuesIterator	Used for iterating through DoubleHistogram values using the finest granularity steps supported by the underlying representation.
DoubleArray	Abstraction of an array of double values.
DoubleArrayList	An array-backed list of doubles.
DoubleCollection	A collection allows basic, efficient operations on sets of elements (difference and intersection).
DoubleContainer	A generic container holding doubles.
DoubleCursor	A cursor over a collection of doubles.
DoubleHistogram	A floating point values High Dynamic Range (HDR) Histogram
DoubleHistogramIterationValue	Represents a value point iterated through in a DoubleHistogram, with associated stats.
DoubleIndexedContainer	An indexed container provides random access to elements based on an index.
DoubleLinearIterator	Used for iterating through DoubleHistogram values in linear steps.
DoubleLogarithmicIterator	Used for iterating through DoubleHistogram values values in logarithmically increasing levels.
DoubleLookupContainer	Marker interface for containers that can check if they contain a given object in at least time O(log n) and ideally in amortized constant time O(1).
DoublePercentileIterator	Used for iterating through DoubleHistogram values values according to percentile levels.
DoublePoint	An indexed double field for fast range filters.
DoublePredicate	A predicate that applies to double objects.
DoubleProcedure	A procedure that applies to double objects.
DoubleRange	An indexed Double Range field.
DoubleRecordedValuesIterator	Used for iterating through DoubleHistogram values values using the finest granularity steps supported by the underlying representation.
DoubleTerms	Result of the TermsAggregator when the field is some kind of decimal number like a float, double, or distance.
DoubleTermsAggregator
DoubleValueRecorder
DoubleValues	Per-segment, per-document double values, which can be calculated at search-time
DoubleValuesComparatorSource	Comparator source for double values.
DoubleValuesSource	Base class for producing DoubleValues To obtain a DoubleValues object for a leaf reader, clients should call DoubleValuesSource.rewrite(IndexSearcher) against the top-level searcher, and then call DoubleValuesSource.getValues(LeafReaderContext, DoubleValues) on the resulting DoubleValuesSource.
DuplicateByteSequenceSpotter	A Trie structure for analysing byte streams for duplicate sequences.
DuplicateSequenceAttribute	Provides statistics useful for detecting duplicate sections of text
DynamicKeyFieldMapper	A field mapper that supports lookup of dynamic sub-keys.
DynamicTemplate
DynamicTemplate.MatchType
DynamicTemplate.XContentFieldType	The type of a field as detected while parsing a json document.
EarlyTerminatingCollector	A Collector that early terminates collection after maxCountHits docs have been collected.
Edge
Edge	Represents an undirected edge of a PlanarGraph.
EdgeEnd	Models the end of an edge incident on a node.
EdgeEndBuilder	Computes the EdgeEnds which arise from a noded Edge.
EdgeEndBundle	A collection of EdgeEnds which obey the following invariant: They originate at the same node and have the same direction.
EdgeEndBundleStar	An ordered list of EdgeEndBundles around a RelateNode.
EdgeEndStar	A EdgeEndStar is an ordered list of EdgeEnds around a node.
EdgeIntersection	Represents a point on an edge which intersects with another edge.
EdgeIntersectionList	A list of edge intersections along an Edge.
EdgeList	A EdgeList is a list of Edges.
EdgeNGramTokenFilter	Tokenizes the given token into n-grams of given size(s).
EdgeNodingValidator	Validates that a collection of Edges is correctly noded.
EdgeRing
EdgeSetIntersector	An EdgeSetIntersector computes all the intersections between the edges in the set.
EdgeString	A sequence of LineMergeDirectedEdges forming one of the lines that will be output by the line-merging process.
EdgeTree	Internal tree node: represents geometry edge from lat1,lon1 to lat2,lon2.
ElasticsearchClient
ElasticsearchCorruptionException	This exception is thrown when Elasticsearch detects an inconsistency in one of it's persistent files.
ElasticsearchDirectoryReader	A FilterDirectoryReader that exposes Elasticsearch internal per shard / index information like the shard ID.
ElasticsearchException	A base class for all elasticsearch exceptions.
ElasticsearchGenerationException	A generic exception indicating failure to generate.
ElasticsearchLeafReader	A FilterLeafReader that exposes Elasticsearch internal per shard / index information like the shard ID.
ElasticsearchMergePolicy	A MergePolicy that upgrades segments and can upgrade merges.
ElasticsearchParseException	Unchecked exception that is translated into a 400 BAD REQUEST error when it bubbles out over HTTP.
ElasticsearchSecurityException	Generic security exception
ElasticsearchStatusException	Exception who's RestStatus is arbitrary rather than derived.
ElasticsearchTimeoutException	The same as TimeoutException simply a runtime one.
ElasticsearchWrapperException	An exception that is meant to be "unwrapped" when sent back to the user as an error because its is cause, if non-null is always more useful to the user than the exception itself.
ElectionSchedulerFactory	It's provably impossible to guarantee that any leader election algorithm ever elects a leader, but they generally work (with probability that approaches 1 over time) as long as elections occur sufficiently infrequently, compared to the time it takes to send a message to another node and receive a response back.
ElectionStrategy	Allows plugging in a custom election strategy, restricting the notion of an election quorum.
ElectMasterService
ElectMasterService.MasterCandidate	a class to encapsulate all the information about a candidate in a master election that is needed to decided which of the candidates should win
Element	A core component of a module or injector.
Elements	Exposes elements of a module so they can be inspected, validated or rewritten.
ElementVisitor<V>	Visit elements.
EmptyDocValuesProducer	Abstract base class implementing a DocValuesProducer that has no doc values.
EmptyTransportResponseHandler
EnableAllocationDecider	This allocation decider allows shard allocations / rebalancing via the cluster wide settings EnableAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ENABLE_SETTING / EnableAllocationDecider.CLUSTER_ROUTING_REBALANCE_ENABLE_SETTING and the per index setting EnableAllocationDecider.INDEX_ROUTING_ALLOCATION_ENABLE_SETTING / EnableAllocationDecider.INDEX_ROUTING_REBALANCE_ENABLE_SETTING.
EnableAllocationDecider.Allocation	Allocation values or rather their string representation to be used used with EnableAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ENABLE_SETTING / EnableAllocationDecider.INDEX_ROUTING_ALLOCATION_ENABLE_SETTING via cluster / index settings.
EnableAllocationDecider.Rebalance	Rebalance values or rather their string representation to be used used with EnableAllocationDecider.CLUSTER_ROUTING_REBALANCE_ENABLE_SETTING / EnableAllocationDecider.INDEX_ROUTING_REBALANCE_ENABLE_SETTING via cluster / index settings.
EnableAssignmentDecider	EnableAssignmentDecider is used to allow/disallow the persistent tasks to be assigned to cluster nodes.
EnableAssignmentDecider.Allocation	Allocation values or rather their string representation to be used used with EnableAssignmentDecider.CLUSTER_TASKS_ALLOCATION_ENABLE_SETTING via cluster settings.
EnableUserRequest	Request object to enable a native realm or built-in user.
EncodableHistogram	A base class for all encodable (and decodable) histogram classes.
Encoder	Encodes original text.
Engine
Engine.CommitId
Engine.Delete
Engine.DeleteResult
Engine.EventListener
Engine.Get
Engine.GetResult
Engine.HistorySource	Whether we should read history operations from translog or Lucene index
Engine.Index
Engine.IndexCommitRef
Engine.IndexResult
Engine.IndexThrottle	A throttling class that can be activated, causing the acquireThrottle method to block on a lock when throttling is enabled
Engine.NoOp
Engine.NoOpLock	A Lock implementation that always allows the lock to be acquired
Engine.NoOpResult
Engine.Operation
Engine.Operation.Origin
Engine.Operation.TYPE	type of operation (index, delete), subclasses use static types
Engine.Result	Base class for index and delete operation results Holds result meta data (e.g.
Engine.Result.Type
Engine.Searcher
Engine.SearcherScope
Engine.SyncedFlushResult
Engine.TranslogRecoveryRunner
Engine.Warmer	Called for each new opened engine reader to warm new segments
EngineConfig
EngineConfig.TombstoneDocSupplier	A supplier supplies tombstone documents which will be used in soft-update methods.
EngineCreationFailureException	An exception indicating that an Engine creation failed.
EngineException
EngineFactory	Simple Engine Factory
EnginePlugin	A plugin that provides alternative engine implementations.
EnglishAnalyzer	Analyzer for English.
EnglishPossessiveFilter	TokenFilter that removes possessives (trailing 's) from words.
EnrichClient	A wrapper for the RestHighLevelClient that provides methods for accessing the Elastic enrich related methods
Envelope	Defines a rectangular region of the 2D coordinate plane.
EnvelopeBuilder
Environment	The environment of where things exists.
Errors	A collection of error messages.
ErrorsException	Indicates that a result could not be returned while preparing or resolving a binding.
EsAbortPolicy
EsExecutors
ESLogMessage	A base class for custom log4j logger messages.
EsRejectedExecutionException
EsThreadPoolExecutor	An extension to thread pool executor, allowing (in the future) to add specific additional stats to it.
EsThreadPoolExecutor.ShutdownListener
EstimateMemoryUsageResponse
ESToParentBlockJoinQuery	A ToParentBlockJoinQuery that allows to retrieve its nested path.
EvalQueryQuality	Result of the evaluation metric calculation on one particular query alone.
EvaluateDataFrameRequest
EvaluateDataFrameResponse
Evaluation	Defines an evaluation
EvaluationMetric	Defines an evaluation metric
EvaluationMetric	Implementations of EvaluationMetric need to provide a way to compute the quality metric for a result list returned by some search (@link SearchHits) and a list of rated documents.
EvaluationMetric.Result	The result of an evaluation metric
EvictingQueue<T>	An EvictingQueue is a non-blocking queue which is limited to a maximum size; when new elements are added to a full queue, elements are evicted from the head of the queue to accommodate the new elements.
EwmaModel	Calculate a exponentially weighted moving average
EwmaModel.EWMAModelBuilder
ExceptionsHelper
ExceptRoleMapperExpression	A negating expression.
ExecutePolicyRequest
ExecutePolicyResponse
ExecutePolicyResponse.ExecutionStatus
ExecuteSnapshotLifecyclePolicyRequest
ExecuteSnapshotLifecyclePolicyResponse
ExecuteSnapshotLifecycleRetentionRequest
ExecuteWatchRequest	An execute watch request to execute a watch by id or inline
ExecuteWatchRequest.ActionExecutionMode
ExecuteWatchResponse
ExecutionPhase
ExecutionState
ExecutorBuilder<U extends org.elasticsearch.threadpool.ExecutorBuilder.ExecutorSettings>	Base class for executor builders.
ExistsQueryBuilder	Constructs a query that only match on documents that the field has a value in them.
ExitCodes	POSIX exit codes.
ExplainableScoreScript	To be implemented by ScoreScript which can provided an Explanation of the score This is currently not used inside elasticsearch but it is used, see for example here: https://github.com/elastic/elasticsearch/issues/8561
ExplainAction	Entry point for the explain feature.
ExplainFetchSubPhase	Explains the scoring calculations for the top hits.
ExplainLifecycleRequest	The request object used by the Explain Lifecycle API.
ExplainLifecycleResponse	The response object returned by the Explain Lifecycle API.
ExplainRequest	Explain request encapsulating the explain query and document identifier to get an explanation for.
ExplainRequestBuilder	A builder for ExplainRequest.
ExplainResponse	Response containing the score explanation.
Explanation	Expert: Describes the score computation for document and query.
Explicit<T>	Holds a value that is either: a) set implicitly e.g.
ExponentialDecayFunctionBuilder
ExponentiallyWeightedMovingAverage	Implements exponentially weighted moving averages (commonly abbreviated EWMA) for a single value.
Exposed	Accompanies a @Provides method annotation in a private module to indicate that the provided binding is exposed.
ExposedBinding<T>	A binding to a key exposed from an enclosed private environment.
ExposedBindingImpl<T>
ExposureBuilder<T>	For private binder's expose() method.
ExpressionRoleMapping	A representation of a single role-mapping.
ExpressionRoleMapping.Fields
ExtendedBounds
ExtendedCommonTermsQuery	Deprecated. Since max_optimization optimization landed in 7.0, normal MatchQuery will achieve the same result without any configuration.
ExtendedStats	Statistics over a set of values (either aggregated over field data or scripts)
ExtendedStats.Bounds
ExtendedStatsAggregationBuilder
ExtendedStatsBucket	Extended Statistics over a set of buckets
ExtendedStatsBucketParser
ExtendedStatsBucketPipelineAggregationBuilder
ExtendedStatsBucketPipelineAggregator
ExtensiblePlugin	An extension point for Plugin implementations to be themselves extensible.
FailableCache<K,V>	Lazily creates (and caches) values for keys.
FailedNodeException
FailedShard	A class representing a failed shard.
FailedToCommitClusterStateException	Thrown when failing to publish a cluster state.
FastCharStream	An efficient implementation of JavaCC's CharStream interface.
FastNodingValidator	Validates that a collection of SegmentStrings is correctly noded.
FastSegmentSetIntersectionFinder	Finds if two sets of SegmentStrings intersect.
FastVectorHighlighter	Another highlighter implementation.
FastVectorHighlighter
FaultDetection	A base class for MasterFaultDetection & NodesFaultDetection, making sure both use the same setting.
FetchPhase	Fetch phase of a search request, used to fetch the actual top matching documents to be returned to the client, identified after reducing all of the matches returned by the query phase
FetchPhaseExecutionException
FetchSearchResult
FetchSourceContext	Context used to fetch the _source.
FetchSourceSubPhase
FetchSubPhase	Sub phase within the fetch phase used to fetch things *about* the documents like highlighting or matched queries.
FetchSubPhase.HitContext
Field	Expert: directly create a field for a document.
Field.Store	Specifies whether and how a field should be stored.
FieldAliasMapper	A mapper for field aliases.
FieldAliasMapper.Builder
FieldAliasMapper.Names
FieldAliasMapper.TypeParser
FieldCapabilities	Describes the capabilities of a field optionally merged across multiple indices.
FieldCapabilitiesAction
FieldCapabilitiesIndexRequest
FieldCapabilitiesIndexResponse	Response for FieldCapabilitiesIndexRequest requests.
FieldCapabilitiesRequest
FieldCapabilitiesRequestBuilder
FieldCapabilitiesResponse	Response for FieldCapabilitiesRequest requests.
FieldComparator<T>	Expert: a FieldComparator compares hits so as to determine their sort order when collecting the top results with TopFieldCollector.
FieldComparator.DocComparator	Sorts by ascending docID
FieldComparator.DoubleComparator	Parses field's values as double (using LeafReader.getNumericDocValues(java.lang.String) and sorts by ascending value
FieldComparator.FloatComparator	Parses field's values as float (using LeafReader.getNumericDocValues(String) and sorts by ascending value
FieldComparator.IntComparator	Parses field's values as int (using LeafReader.getNumericDocValues(String) and sorts by ascending value
FieldComparator.LongComparator	Parses field's values as long (using LeafReader.getNumericDocValues(String) and sorts by ascending value
FieldComparator.NumericComparator<T extends Number>	Base FieldComparator class for numeric types
FieldComparator.RelevanceComparator	Sorts by descending relevance.
FieldComparator.TermOrdValComparator	Sorts by field's natural Term sort order, using ordinals.
FieldComparator.TermValComparator	Sorts by field's natural Term sort order.
FieldComparatorSource	Provides a FieldComparator for custom field sorting.
FieldContext	Used by all field data based aggregators.
FieldData	Utility methods, similar to Lucene's DocValues.
FieldDataStats
FieldDoc	Expert: A ScoreDoc which also contains information about how to sort the referenced document.
FieldFragList	FieldFragList has a list of "frag info" that is used by FragmentsBuilder class to create fragments (snippets).
FieldFragList.WeightedFragInfo	List of term offsets + weight for a frag info
FieldFragList.WeightedFragInfo.SubInfo	Represents the list of term offsets for some text
FieldHighlighter	Internal highlighter abstraction that operates on a per field basis.
FieldInfo	Access to the Field Info file that describes document fields and whether or not they are indexed.
FieldInfos	Collection of FieldInfos (accessible by number or by name).
FieldInfosFormat	Encodes/decodes FieldInfos
FieldInvertState	This class tracks the number and position / offset parameters of terms being added to the index.
FieldLookup
FieldMapper
FieldMapper.Builder<T extends FieldMapper.Builder,Y extends FieldMapper>
FieldMapper.CopyTo	Represents a list of fields with optional boost factor where the current field should be copied to
FieldMapper.CopyTo.Builder
FieldMapper.MultiFields
FieldMapper.MultiFields.Builder
FieldMaskingSpanQuery	Wrapper to allow SpanQuery objects participate in composite single-field SpanQueries by 'lying' about their search field.
FieldMaskingSpanQueryBuilder
FieldMemoryStats	A reusable class to encode field -&gt; memory size mappings
FieldNameAnalyzer
FieldNamesFieldMapper	A mapper that indexes the field names of a document under _field_names.
FieldNamesFieldMapper.Defaults
FieldNamesFieldMapper.FieldNamesFieldType
FieldNamesFieldMapper.TypeParser
FieldOffsetStrategy	Ultimately returns an OffsetsEnum yielding potentially highlightable words in the text.
FieldPhraseList	FieldPhraseList has a list of WeightedPhraseInfo that is used by FragListBuilder to create a FieldFragList object.
FieldPhraseList.WeightedPhraseInfo	Represents the list of term offsets and boost for some text
FieldPhraseList.WeightedPhraseInfo.Toffs	Term offsets (start + end)
FieldQuery	FieldQuery breaks down query object into terms/phrases and keeps them in a QueryPhraseMap structure.
FieldQuery.QueryPhraseMap	Internal structure of a query for highlighting: represents a nested query structure
FieldReader	BlockTree's implementation of Terms.
FieldRoleMapperExpression	An expression that evaluates to true if a field (map element) matches the provided values.
Fields	Provides a Terms index for fields that have it, and lists which fields do.
FieldsConsumer	Abstract API that consumes terms, doc, freq, prox, offset and payloads postings.
FieldScript	A script to produce dynamic values for return fields.
FieldScript.Factory
FieldScript.LeafFactory	A factory to construct FieldScript instances.
FieldsLookup
FieldSortBuilder	A sort builder to sort based on a document field.
FieldsProducer	Abstract API that produces terms, doc, freq, prox, offset and payloads postings.
FieldStats
FieldsVisitor	Base StoredFieldVisitor that retrieves all non-redundant metadata.
FieldTermStack	FieldTermStack is a stack that keeps query terms in the specified field of the document to be highlighted.
FieldTermStack.TermInfo	Single term with its position/offsets in the document and IDF weight.
FieldType	Describes the properties of a field.
FieldValueFactorFunction	A function_score function that multiplies the score with the value of a field from the document, optionally multiplying the field by a factor first, and applying a modification (log, ln, sqrt, square, etc) afterwards.
FieldValueFactorFunction.Modifier	The Type class encapsulates the modification types that can be applied to the score/value product.
FieldValueFactorFunctionBuilder	Builder to construct field_value_factor functions for a function score query.
FieldValueHitQueue<T extends FieldValueHitQueue.Entry>	Expert: A hit queue for sorting by hits by terms in more than one field.
FieldValueHitQueue.Entry	Extension of ScoreDoc to also store the FieldComparator slot.
FileBasedSeedHostsProvider	An implementation of SeedHostsProvider that reads hosts/ports from FileBasedSeedHostsProvider.UNICAST_HOSTS_FILE.
FileRestoreContext	This context will execute a file restore of the lucene files.
FileStructure	Stores the file format determined by Machine Learning.
FileStructure.Builder
FileStructure.Format
FileSwitchDirectory	Expert: A Directory instance that switches files between two other Directory instances.
FileSystemUtils	Elasticsearch utils to work with Path
Filter	A filter aggregation.
FilterableTermsEnum	A frequency TermsEnum that returns frequencies derived from a collection of cached leaf termEnums.
FilterAggregationBuilder
FilterAggregator	Aggregate all docs that match a filter.
FilterAggregatorFactory
FilterAllocationDecider	This AllocationDecider control shard allocation by include and exclude filters via dynamic cluster and index routing settings.
FilterClient	A Client that contains another Client which it uses as its basic source, possibly transforming the requests / responses along the way or providing additional functionality.
FilterCodec	A codec that forwards all its method calls to another codec.
FilterCodecReader	A FilterCodecReader contains another CodecReader, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
FilterCollector	Collector delegator.
FilterDirectory	Directory implementation that delegates calls to another directory.
FilterDirectoryReader	A FilterDirectoryReader wraps another DirectoryReader, allowing implementations to transform or extend it.
FilterDirectoryReader.SubReaderWrapper	Factory class passed to FilterDirectoryReader constructor that allows subclasses to wrap the filtered DirectoryReader's subreaders.
FilteredCollector
FilteredDocIdSetIterator	Abstract decorator class of a DocIdSetIterator implementation that provides on-demand filter/validation mechanism on an underlying DocIdSetIterator.
FilteredIntervalsSource	An IntervalsSource that filters the intervals from another IntervalsSource
FilteredSearchContext
FilteredTermsEnum	Abstract class for enumerating a subset of all terms.
FilteredTermsEnum.AcceptStatus	Return value, if term should be accepted or the iteration should END.
FilterIndexOutput	IndexOutput that delegates all calls to another IndexOutput
FilteringTokenFilter	Abstract base class for TokenFilters that may remove tokens.
FilterLeafCollector	LeafCollector delegator.
FilterLeafReader	A FilterLeafReader contains another LeafReader, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
FilterLeafReader.FilterFields	Base class for filtering Fields implementations.
FilterLeafReader.FilterPostingsEnum	Base class for filtering PostingsEnum implementations.
FilterLeafReader.FilterTerms	Base class for filtering Terms implementations.
FilterLeafReader.FilterTermsEnum	Base class for filtering TermsEnum implementations.
FilterMatchesIterator	A MatchesIterator that delegates all calls to another MatchesIterator
FilterMergePolicy	A wrapper for MergePolicy instances.
FilterNumericDocValues	Delegates all methods to a wrapped NumericDocValues.
FilterPath
FilterPathBasedFilter
FilterRef
FilterRef.FilterType
Filters	A multi bucket aggregation where the buckets are defined by a set of filters (a bucket per filter).
Filters.Bucket	A bucket associated with a specific filter (identified by its key)
FiltersAggregationBuilder
FiltersAggregator
FiltersAggregator.KeyedFilter
FiltersAggregatorFactory
FilterScorable	Filter a Scorable, intercepting methods and optionally changing their return values The default implementation simply passes all calls to its delegate, with the exception of Scorable.setMinCompetitiveScore(float) which defaults to a no-op.
FilterScorer	A FilterScorer contains another Scorer, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
FilterScript	A script implementation of a query filter.
FilterScript.Factory	A factory to construct stateful FilterScript factories for a specific index.
FilterScript.LeafFactory	A factory to construct FilterScript instances.
FilterSpans	A Spans implementation wrapping another spans instance, allowing to filter spans matches easily by implementing FilterSpans.accept(org.apache.lucene.search.spans.Spans)
FilterSpans.AcceptStatus	Status returned from FilterSpans.accept(Spans) that indicates whether a candidate match should be accepted, rejected, or rejected and move on to the next document.
FilterStreamInput	Wraps a StreamInput and delegates to it.
FilterWeight	A FilterWeight contains another Weight and implements all abstract methods by calling the contained weight's method.
FindFileStructureRequest
FindFileStructureResponse
FiniteStringsIterator	Iterates all accepted strings.
FirstPassGroupingCollector<T>	FirstPassGroupingCollector is the first of two passes necessary to collect grouped hits.
FixedBitSet	BitSet of fixed length (numBits), backed by accessible (FixedBitSet.getBits()) long[], accessed with an int index, implementing Bits and DocIdSet.
FixedExecutorBuilder	A builder for fixed executors.
FixedShingleFilter	A FixedShingleFilter constructs shingles (token n-grams) from a token stream.
FlattenGraphFilter	Converts an incoming graph token stream, such as one from SynonymGraphFilter, into a flat form so that all nodes form a single linear chain with no side paths.
FloatArray	Abstraction of an array of double values.
FloatCollection	A collection allows basic, efficient operations on sets of elements (difference and intersection).
FloatContainer	A generic container holding floats.
FloatCursor	A cursor over a collection of floats.
FloatLookupContainer	Marker interface for containers that can check if they contain a given object in at least time O(log n) and ideally in amortized constant time O(1).
FloatPoint	An indexed float field for fast range filters.
FloatPredicate	A predicate that applies to float objects.
FloatProcedure	A procedure that applies to float objects.
FloatRange	An indexed Float Range field.
FloatValuesComparatorSource	Comparator source for float values.
FlushAction
FlushFailedEngineException
FlushInfo	A FlushInfo provides information required for a FLUSH context.
FlushJobRequest	Request object to flush a given Machine Learning job.
FlushJobResponse	Response object containing flush acknowledgement and additional data
FlushRequest	A flush request to flush one or more indices.
FlushRequestBuilder
FlushResponse	A response to flush action.
FlushStats
FollowConfig
FollowersChecker	The FollowersChecker is responsible for allowing a leader to check that its followers are still connected and healthy.
FollowersChecker.FollowerCheckRequest
FollowInfoRequest
FollowInfoResponse
FollowInfoResponse.FollowerInfo
FollowInfoResponse.Status
FollowStatsRequest
FollowStatsResponse
ForceMergeAction
ForceMergeAction
ForceMergeRequest	A request to force merging the segments of one or more indices.
ForceMergeRequest.Defaults
ForceMergeRequestBuilder	A request to force merge one or more indices.
ForceMergeResponse	A response for force merge action.
ForDeltaUtil	Utility class to encode/decode increasing sequences of 128 integers.
ForecastJobRequest	Pojo for forecasting an existing and open Machine Learning Job
ForecastJobResponse	Forecast response object
ForecastStats	A class to hold statistics about forecasts.
ForgetFollowerRequest	Represents a forget follower request.
Formatter	Processes terms found in the original text, typically by applying some form of mark-up to highlight terms in HTML search results pages.
FragListBuilder	FragListBuilder is an interface for FieldFragList builder classes.
FragmentBuilderHelper	Simple helper class for FastVectorHighlighter FragmentsBuilder implementations.
Fragmenter	Implements the policy for breaking text into multiple fragments for consideration by the Highlighter class.
FragmentsBuilder	FragmentsBuilder is an interface for fragments (snippets) builder classes.
FreezeAction
FreezeIndexRequest	Request for the _freeze index API
FreqTermsEnum	A frequency terms enum that maintains a cache of docFreq, totalTermFreq, or both for repeated term lookup.
FrequencyTrackingRingBuffer	A ring buffer that tracks the frequency of the integers that it contains.
FsBlobContainer	A file system based implementation of BlobContainer.
FsBlobStore
FSDirectory	Base class for Directory implementations that store index files in the file system.
FsDirectoryFactory
FsInfo
FsInfo.DeviceStats
FsInfo.IoStats
FsInfo.Path
FSLockFactory	Base class for file system based locking implementation.
FsProbe
FsRepository	Shared file system implementation of the BlobStoreRepository
FsService
FST<T>	Represents an finite state machine (FST), using a compact byte[] format.
FST.Arc<T>	Represents a single arc.
FST.BytesReader	Reads bytes stored in an FST.
FST.INPUT_TYPE	Specifies allowed range of each int input label for this FST.
FSTStore	Abstraction for reading/writing bytes necessary for FST.
FSTUtil	Exposes a utility method to enumerate all paths intersecting an Automaton with an FST.
FSTUtil.Path<T>	Holds a pair (automaton, fst) of states and accumulated output in the intersected machine.
FunctionScoreQuery	A query that wraps another query, and uses a DoubleValuesSource to replace or modify the wrapped query's score If the DoubleValuesSource doesn't return a value for a particular document, then that document will be given a score of 0.
FunctionScoreQuery	A query that allows for a pluggable boost function / filter.
FunctionScoreQuery.FilterScoreFunction
FunctionScoreQuery.ScoreMode
FunctionScoreQueryBuilder	A query that uses a filters with a script associated with them to compute the score.
FunctionScoreQueryBuilder.FilterFunctionBuilder	Function to be associated with an optional filter, meaning it will be executed only for the documents that match the given filter.
FutureArrays	Additional methods from Java 9's java.util.Arrays.
FutureObjects	Additional methods from Java 9's java.util.Objects.
FutureTransportResponseHandler<T extends TransportResponse>	A response handler to be used when all interaction will be done through the TransportFuture.
FutureUtils
Fuzziness	A unit class that encapsulates all in-exact search parsing and conversion from similarities to edit distances etc.
FuzzyCompletionQuery	A CompletionQuery that match documents containing terms within an edit distance of the specified prefix.
FuzzyOptions	Fuzzy options for completion suggester
FuzzyOptions.Builder	Options for fuzzy queries
FuzzyQuery	Implements the fuzzy search query.
FuzzyQueryBuilder	A Query that does fuzzy matching for a specific value.
FuzzyTermsEnum	Subclass of TermsEnum for enumerating all terms that are similar to the specified filter term.
FuzzyTermsEnum.LevenshteinAutomataAttribute	reuses compiled automata across different segments, because they are independent of the index
FuzzyTermsEnum.LevenshteinAutomataAttributeImpl	Stores compiled automata as a list (indexed by edit distance)
Gateway
Gateway.GatewayStateRecoveredListener
GatewayAllocator
GatewayException
GatewayMetaState	Loads (and maybe upgrades) cluster metadata at startup, and persistently stores cluster metadata for future restarts.
GatewayModule
GatewayService
GaussDecayFunctionBuilder
GcNames
GeneralScriptException	Deprecated. Use ScriptException for exceptions from the scripting engine, otherwise use a more appropriate exception (e.g.
Generated
GeoBoundingBoxQueryBuilder	Creates a Lucene query that will filter for all documents that lie within the specified bounding box.
GeoBounds	An aggregation that computes a bounding box in which all documents of the current bucket are.
GeoBoundsAggregationBuilder
GeoCentroid	Interface for GeoCentroidAggregator
GeoCentroidAggregationBuilder
GeoCircle	A circle as it exists on the surface of a sphere.
GeoContextMapping	A ContextMapping that uses a geo location/area as a criteria.
GeoContextMapping.Builder
GeodesicSphereDistCalc	A base class for a Distance Calculator that assumes a spherical earth model.
GeodesicSphereDistCalc.Haversine
GeodesicSphereDistCalc.LawOfCosines
GeodesicSphereDistCalc.Vincenty
GeoDistance	Geo distance calculation.
GeoDistanceAggregationBuilder
GeoDistanceAggregationBuilder.Range
GeoDistanceQueryBuilder	Filter results of a query to include only those within a specific distance to some geo point.
GeoDistanceRangeAggregatorFactory
GeoDistanceSortBuilder	A geo distance based sorting on a geo point like field.
GeoEncodingUtils	reusable geopoint encoding methods
GeoEncodingUtils.DistancePredicate	A predicate that checks whether a given point is within a distance of another point.
GeoEncodingUtils.PolygonPredicate	A predicate that checks whether a given point is within a polygon.
GeoExecType	Specifies how a geo query should be run.
GeographyValidator	Validator that checks that lats are between -90 and +90 and lons are between -180 and +180 and altitude is present only if ignoreZValue is set to true
GeoGrid	A geo-grid aggregation.
GeoGrid.Bucket	A bucket that is associated with a geo-grid cell.
GeoGridAggregationBuilder
GeoGridAggregationBuilder.PrecisionParser
GeoGridAggregator<T extends InternalGeoGrid>	Aggregates data expressed as longs (for efficiency's sake) but formats results as aggregation-specific strings.
Geohash	Utilities for converting to/from the GeoHash standard The geohash long format is represented as lon/lat (x/y) interleaved with the 4 least significant bits representing the level (1-12) [xyxy...xyxyllll] This differs from a morton encoded value which interleaves lat/lon (y/x).
GeoHashGridAggregationBuilder
GeoHashGridAggregator	Aggregates data expressed as GeoHash longs (for efficiency's sake) but formats results as Geohash strings.
GeoHashGridAggregatorFactory
GeohashPrefixTree	A SpatialPrefixTree based on Geohashes.
GeohashPrefixTree.Factory	Factory for creating GeohashPrefixTree instances with useful defaults
GeohashUtils	Utilities for encoding and decoding geohashes.
GeoJson	Utility class for converting libs/geo shapes to and from GeoJson
GeoJSONReader
GeoJSONWriter
GeometricShapeFactory	Computes various kinds of common geometric shapes.
GeometricShapeFactory.Dimensions
Geometry	Base class for all Geometry objects supported by elasticsearch
Geometry	A representation of a planar, linear vector geometry.
GeometryCollection<G extends Geometry>	Collection of arbitrary geometry classes
GeometryCollection	Models a collection of Geometrys of arbitrary type and dimension.
GeometryCollectionBuilder
GeometryCollectionIterator	Iterates over all Geometrys in a Geometry, (which may be either a collection or an atomic geometry).
GeometryCollectionMapper	Maps the members of a GeometryCollection into another GeometryCollection via a defined mapping function.
GeometryCombiner	Combines Geometrys to produce a GeometryCollection of the most appropriate type.
GeometryComponentFilter	Geometry classes support the concept of applying a GeometryComponentFilter filter to the Geometry.
GeometryEditor	A class which supports creating new Geometrys which are modifications of existing ones, maintaining the same type structure.
GeometryEditor.CoordinateOperation	A GeometryEditor.GeometryEditorOperation which edits the coordinate list of a Geometry.
GeometryEditor.CoordinateSequenceOperation	A GeometryEditor.GeometryEditorOperation which edits the CoordinateSequence of a Geometry.
GeometryEditor.GeometryEditorOperation	A interface which specifies an edit operation for Geometries.
GeometryEditor.NoOpGeometryOperation	A GeometryEditorOperation which does not modify the input geometry.
GeometryExtracter	Extracts the components of a given type from a Geometry.
GeometryFactory	Supplies a set of utility methods for building Geometry objects from lists of Coordinates.
GeometryFilter	GeometryCollection classes support the concept of applying a GeometryFilter to the Geometry.
GeometryFormat	Geometry serializer/deserializer
GeometryGraph	A GeometryGraph is a graph that models a given Geometry
GeometryGraphOperation	The base class for operations that require GeometryGraphs.
GeometryIO	Utility class for binary serializtion/deserialization of libs/geo classes
GeometryLocation	Represents the location of a point on a Geometry.
GeometryMapper	Methods to map various collections of Geometrys via defined mapping functions.
GeometryMapper.MapOp	An interface for geometry functions used for mapping.
GeometryParser	An utility class with a geometry parser methods supporting different shape representation formats
GeometrySnapper	Snaps the vertices and segments of a Geometry to another Geometry's vertices.
GeometryTransformer	A framework for processes which transform an input Geometry into an output Geometry, possibly changing its structure and type(s).
GeometryValidator	Generic geometry validator that can be used by the parser to verify the validity of the parsed geometry
GeometryVisitor<T,E extends Exception>	Support class for creating Geometry Visitors.
GeoPoint
GeoPointFieldMapper	Field Mapper for geo_point types.
GeoPointFieldMapper.Builder
GeoPointFieldMapper.Defaults
GeoPointFieldMapper.GeoPointFieldType
GeoPointFieldMapper.Names
GeoPointFieldMapper.TypeParser
GeoPointValues	Per-document geo-point values.
GeoPolygonQueryBuilder
GeoQueryContext	Defines the query context for GeoContextMapping
GeoQueryContext.Builder
GeoShapeFieldMapper	FieldMapper for indexing LatLonShapes.
GeoShapeFieldMapper.Builder
GeoShapeFieldMapper.GeoShapeFieldType
GeoShapeIndexer	Utility class that converts geometries into Lucene-compatible form
GeoShapeQueryBuilder	Derived AbstractGeometryQueryBuilder that builds a lat, lon GeoShape Query
GeoShapeType	Enumeration that lists all GeoShapeTypes that can be parsed and indexed
GeoTileGridAggregationBuilder
GeoTileGridAggregator	Aggregates data expressed as geotile longs (for efficiency's sake) but formats results as geotile strings.
GeoTileGridAggregatorFactory
GeoTileGridValuesSourceBuilder
GeoTileUtils	Implements geotile key hashing, same as used by many map tile implementations.
GeoUtils	Basic reusable geo-spatial utility methods
GeoUtils
GeoUtils.EffectivePoint	Represents the point of the geohash cell that should be used as the value of geohash
GeoUtils.WindingOrder	used to define the orientation of 3 points -1 = Clockwise 0 = Colinear 1 = Counter-clockwise
GeoValidationMethod	This enum is used to determine how to deal with invalid geo coordinates in geo related queries: On STRICT validation invalid coordinates cause an exception to be thrown.
GeoWKTParser	Parses shape geometry represented in WKT format complies with OGC® document: 12-063r5 and ISO/IEC 13249-3:2016 standard located at http://docs.opengeospatial.org/is/12-063r5/12-063r5.html
GetAction
GetAliasesAction
GetAliasesRequest
GetAliasesRequestBuilder
GetAliasesResponse
GetAliasesResponse	Response obtained from the get aliases API.
GetApiKeyRequest	Request for get API key
GetApiKeyResponse	Response for get API keys. The result contains information about the API keys that were found.
GetAutoFollowPatternRequest	Request class for get auto follow pattern api.
GetAutoFollowPatternResponse
GetAutoFollowPatternResponse.Pattern
GetBasicStatusResponse	Response class for license get basic status API
GetBucketsRequest	A request to retrieve buckets of a given job
GetBucketsResponse	A response containing the requested buckets
GetBuiltinPrivilegesRequest	Request object to retrieve the privilege that are builtin to the Elasticsearch cluster.
GetBuiltinPrivilegesResponse	Get builtin privileges response
GetCalendarEventsRequest	Get the Scheduled Events for a Calendar
GetCalendarEventsResponse	Contains a List of the found ScheduledEvent objects and the total count found
GetCalendarsRequest
GetCalendarsResponse
GetCategoriesRequest	A request to retrieve categories of a given job
GetCategoriesResponse	A response containing the requested categories
GetDatafeedRequest	Request object to get DatafeedConfig objects with the matching datafeedIds.
GetDatafeedResponse	Contains a List of the found DatafeedConfig objects and the total count found
GetDatafeedStatsRequest	Request object to get DatafeedStats by their respective datafeedIds _all explicitly gets all the datafeeds' statistics in the cluster An empty request (no datafeedIds) implicitly gets all the datafeeds' statistics in the cluster
GetDatafeedStatsResponse	Contains a List of the found DatafeedStats objects and the total count found
GetDataFrameAnalyticsRequest
GetDataFrameAnalyticsResponse
GetDataFrameAnalyticsStatsRequest	Request to get data frame analytics stats
GetDataFrameAnalyticsStatsResponse
GetFieldMappingsAction
GetFieldMappingsIndexRequest
GetFieldMappingsRequest	Request the mappings of specific fields Note: there is a new class with the same name for the Java HLRC that uses a typeless format.
GetFieldMappingsRequest	Request the mappings of specific fields
GetFieldMappingsRequestBuilder	A helper class to build GetFieldMappingsRequest objects
GetFieldMappingsResponse	Response object for GetFieldMappingsRequest API Note: there is a new class with the same name for the Java HLRC that uses a typeless format.
GetFieldMappingsResponse	Response object for GetFieldMappingsRequest API
GetFieldMappingsResponse.FieldMappingMetaData
GetFieldMappingsResponse.FieldMappingMetaData
GetFiltersRequest	A request to retrieve MlFilters
GetFiltersResponse	Contains a List of the found MlFilter objects and the total count found
GetIndexAction
GetIndexRequest	A request to retrieve information about an index.
GetIndexRequest	A request to retrieve information about an index.
GetIndexRequest.Feature
GetIndexRequest.Feature
GetIndexRequestBuilder
GetIndexResponse	A response for a get index action.
GetIndexResponse	A client side response for a get index action.
GetIndexTemplatesAction
GetIndexTemplatesRequest	Request that allows to retrieve index templates
GetIndexTemplatesRequest	A request to read the content of index templates
GetIndexTemplatesRequestBuilder
GetIndexTemplatesResponse
GetIndexTemplatesResponse
GetInfluencersRequest	A request to retrieve influencers of a given job
GetInfluencersResponse	A response containing the requested influencers
GetJobRequest	Request object to get Job objects with the matching jobIds or groupNames.
GetJobResponse	Contains a List of the found Job objects and the total count found
GetJobStatsRequest	Request object to get JobStats by their respective jobIds _all explicitly gets all the jobs' statistics in the cluster An empty request (no jobIds) implicitly gets all the jobs' statistics in the cluster
GetJobStatsResponse	Contains a List of the found JobStats objects and the total count found
GetLicenseRequest
GetLicenseResponse
GetLifecyclePolicyRequest
GetLifecyclePolicyResponse
GetMappingsAction
GetMappingsRequest
GetMappingsRequest
GetMappingsRequestBuilder
GetMappingsResponse
GetMappingsResponse
GetModelSnapshotsRequest	A request to retrieve information about model snapshots for a given job
GetModelSnapshotsResponse	A response containing the requested snapshots
GetOverallBucketsRequest	A request to retrieve overall buckets of set of jobs
GetOverallBucketsResponse	A response containing the requested overall buckets
GetPipelineAction
GetPipelineRequest
GetPipelineRequestBuilder
GetPipelineResponse
GetPipelineTransportAction
GetPolicyRequest
GetPolicyResponse
GetPrivilegesRequest	Request object to get application privilege(s)
GetPrivilegesResponse	Get application privileges response
GetRecordsRequest	A request to retrieve records of a given job
GetRecordsResponse	A response containing the requested records
GetRepositoriesAction	Get repositories action
GetRepositoriesRequest	Get repository request
GetRepositoriesRequestBuilder	Get repository request builder
GetRepositoriesResponse	Get repositories response
GetRequest	A request to get a document (its source) from an index based on its id.
GetRequestBuilder	A get document action request builder.
GetResponse	The response of a get action.
GetResult
GetRoleMappingsRequest	Request object to get role mappings
GetRoleMappingsResponse	Get role mappings response
GetRolesRequest	Request object to retrieve roles from the native roles store
GetRolesResponse	Response when requesting one or more roles.
GetRollupCapsRequest
GetRollupCapsResponse
GetRollupIndexCapsRequest
GetRollupIndexCapsResponse
GetRollupJobRequest	Request to fetch rollup jobs.
GetRollupJobResponse	Response from rollup's get jobs api.
GetRollupJobResponse.JobWrapper
GetRollupJobResponse.RollupIndexerJobStats	The Rollup specialization of stats for the AsyncTwoPhaseIndexer.
GetRollupJobResponse.RollupJobStatus	Status of the rollup job.
GetSettingsAction
GetSettingsRequest
GetSettingsRequestBuilder
GetSettingsResponse
GetSnapshotLifecyclePolicyRequest
GetSnapshotLifecyclePolicyResponse
GetSnapshotLifecycleStatsRequest
GetSnapshotLifecycleStatsResponse
GetSnapshotsAction	Get snapshots action
GetSnapshotsRequest	Get snapshot request
GetSnapshotsRequestBuilder	Get snapshots request builder
GetSnapshotsResponse	Get snapshots response
GetSslCertificatesRequest	Request object to retrieve the X.509 certificates that are used to encrypt communications in an Elasticsearch cluster.
GetSslCertificatesResponse	Response object when retrieving the X.509 certificates that are used to encrypt communications in an Elasticsearch cluster.
GetStats
GetStoredScriptAction
GetStoredScriptRequest
GetStoredScriptRequestBuilder
GetStoredScriptResponse
GetTaskAction	ActionType for retrieving a list of currently running tasks
GetTaskRequest	A request to get node tasks
GetTaskRequest
GetTaskRequestBuilder	Builder for the request to retrieve the list of tasks running on the specified nodes
GetTaskResponse	Returns the list of tasks currently running on the nodes
GetTaskResponse
GetTransformRequest
GetTransformResponse
GetTransformStatsRequest
GetTransformStatsResponse
GetTrialStatusResponse	Response class for license get trial status API
GetUserPrivilegesRequest	A request object for the SecurityClient.getUserPrivileges(RequestOptions) API.
GetUserPrivilegesResponse	The response for the SecurityClient.getUserPrivileges(RequestOptions) API.
GetUsersRequest	Request object to retrieve users from the native realm
GetUsersResponse	Response when requesting zero or more users.
GetUsersResponse.ParsedUser
GetWatchRequest	The request to get the watch by name (id)
GetWatchResponse
Glob	Utility class for glob-like matching
Global	A global aggregation.
GlobalAggregationBuilder
GlobalAggregator
GlobalAggregatorFactory
GlobalCheckpointListeners	Represents a collection of global checkpoint listeners.
GlobalCheckpointListeners.GlobalCheckpointListener	A global checkpoint listener consisting of a callback that is notified when the global checkpoint is updated or the shard is closed.
GlobalCheckpointSyncAction	Background global checkpoint sync action initiated when a shard goes inactive.
GlobalCheckpointSyncAction.Request
GlobalOperationPrivilege	Represents generic global cluster privileges that can be scoped by categories and then further by operations.
GlobalOrdinalsBuilder	Utility class to build global ordinals.
GlobalOrdinalsIndexFieldData	Concrete implementation of IndexOrdinalsFieldData for global ordinals.
GlobalOrdinalsSignificantTermsAggregator	An global ordinal based implementation of significant terms, based on SignificantStringTermsAggregator.
GlobalOrdinalsStringTermsAggregator	An aggregator of string values that relies on global ordinals in order to build buckets.
GlobalOrdinalsStringTermsAggregator.GlobalOrdLookupFunction
GlobalPrivileges	Represents global privileges.
GND
GND.GNDBuilder
GraphClient
GraphComponent	A GraphComponent is the parent class for the objects' that form a graph.
GraphComponent	The base class for all graph component classes.
GraphExploreRequest	Holds the criteria required to guide the exploration of connected terms which can be returned as a graph.
GraphExploreRequest.TermBoost
GraphExploreResponse	Graph explore response holds a graph of Vertex and Connection objects (nodes and edges in common graph parlance).
GraphTokenFilter	An abstract TokenFilter that exposes its input stream as a graph Call GraphTokenFilter.incrementBaseToken() to move the root of the graph to the next position in the TokenStream, GraphTokenFilter.incrementGraphToken() to move along the current graph, and GraphTokenFilter.incrementGraph() to reset to the next graph based at the current root.
GraphTokenStreamFiniteStrings	Consumes a TokenStream and creates an Automaton where the transition labels are terms from the TermToBytesRefAttribute.
GroupConfig	The configuration object for the groups section in the rollup config.
GroupConfig	Class describing how to group data
GroupConfig.Builder
GroupedActionListener<T>	An action listener that delegates its results to another listener once it has received N results (either successes or failures).
GroupSelector<T>	Defines a group, for use by grouping collectors A GroupSelector acts as an iterator over documents.
GroupSelector.State	What to do with the current value
GroupShardsIterator<ShardIt extends ShardIterator>	This class implements a compilation of ShardIterators.
GrowableByteArrayDataOutput	A DataOutput that can be used to build a byte[].
GrowableWriter	Implements PackedInts.Mutable, but grows the bit count of the underlying packed ints on-demand.
Guice	The entry point to the Guice framework.
HalfFloatPoint	An indexed half-float field for fast range filters.
HandledTransportAction<Request extends ActionRequest,Response extends ActionResponse>	A TransportAction that self registers a handler into the transport service
HandshakingTransportAddressConnector
HardlinkCopyDirectoryWrapper	This directory wrapper overrides Directory.copyFrom(Directory, String, String, IOContext) in order to optionally use a hard-link instead of a full byte by byte file copy if applicable.
HasAggregations
HasDependencies	Implemented by bindings, providers and instances that expose their dependencies explicitly.
HashContainers
HashOrderMixing	Factory methods to acquire the most common types of HashOrderMixingStrategy.
HashOrderMixing.Strategy
HashOrderMixingStrategy	Hash order mixing strategy implementations should provide an, ideally, random integer that is later XORed with the hash of a given key before the slot lookup in associative arrays.
HasPrivilegesRequest	Request to determine whether the current user has a list of privileges.
HasPrivilegesResponse	Response when checking whether the current user has a defined set of privileges.
HCoordinate	Represents a homogeneous coordinate in a 2-D coordinate space.
HeapBufferedAsyncResponseConsumer	Default implementation of HttpAsyncResponseConsumer.
HeapPointReader	Utility class to read buffered points from in-heap arrays.
HeapPointWriter	Utility class to write new points into in-heap arrays.
HeatmapFacetCounter	Computes spatial facets in two dimensions as a grid of numbers.
HeatmapFacetCounter.Heatmap	Response structure
HierarchyCircuitBreakerService	CircuitBreakerService that attempts to redistribute space between breakers if tripped
HighlightBuilder	A builder for search highlighting.
HighlightBuilder.BoundaryScannerType
HighlightBuilder.Field
HighlightBuilder.Order
Highlighter	Marks up highlighted terms found in the best sections of text, using configurable Fragmenter, Scorer, Formatter, Encoder and tokenizers.
Highlighter	Highlights a search result.
HighlighterContext
HighlightField	A field highlighted with its highlighted fragments.
HighlightPhase
HighlightUtils
HighlightUtils.Encoders
Histogram	A histogram aggregation.
Histogram	A High Dynamic Range (HDR) Histogram
Histogram.Bucket	A bucket in the histogram where documents fall in
HistogramAggregationBuilder	A builder for histograms on numeric fields.
HistogramAggregatorFactory	Constructs the per-shard aggregator instance for histogram aggregation.
HistogramFactory	Implemented by histogram aggregations and used by pipeline aggregations to insert buckets.
HistogramGroupConfig	The configuration object for the histograms in the rollup config { "groups": [ "histogram": { "fields" : [ "foo", "bar" ], "interval" : 123 } ] }
HistogramGroupSource	A grouping via a histogram aggregation referencing a numeric field
HistogramGroupSource.Builder
HistogramIterationValue	Represents a value point iterated through in a Histogram, with associated stats.
HistogramValuesSourceBuilder	A CompositeValuesSourceBuilder that builds a HistogramValuesSource from another numeric values source using the provided interval.
HoltLinearModel	Calculate a doubly exponential weighted moving average
HoltLinearModel.HoltLinearModelBuilder
HoltWintersModel	Calculate a triple exponential weighted moving average
HoltWintersModel.HoltWintersModelBuilder
HoltWintersModel.SeasonalityType
Hop	A Hop represents one of potentially many stages in a graph exploration.
HotPixel	Implements a "hot pixel" as used in the Snap Rounding algorithm.
HotThreads
HppcMaps
HppcMaps.Object
HppcMaps.Object.Integer
HttpAsyncResponseConsumerFactory	Factory used to create instances of HttpAsyncResponseConsumer.
HttpAsyncResponseConsumerFactory.HeapBufferedResponseConsumerFactory	Default factory used to create instances of HttpAsyncResponseConsumer.
HttpChannel
HttpChannelTaskHandler	This class executes a request and associates the corresponding Task with the HttpChannel that it was originated from, so that the tasks associated with a certain channel get cancelled when the underlying connection gets closed.
HttpException
HttpInfo
HttpRequest	A basic http request abstraction.
HttpRequest.HttpVersion
HttpResponse	A basic http response abstraction.
HttpServerTransport
HttpServerTransport.Dispatcher	Dispatches HTTP requests.
HttpStats
HttpTransportSettings
HunspellService	Serves as a node level registry for hunspell dictionaries.
HunspellStemFilter	TokenFilter that uses hunspell affix rules and words to stem tokens.
HunspellTokenFilterFactory
HyperLogLogPlusPlus	Hyperloglog++ counter, implemented based on pseudo code from http://static.googleusercontent.com/media/research.google.com/fr//pubs/archive/40671.pdf and its appendix https://docs.google.com/document/d/1gyjfMHy43U9OWBXxfaeG-3MjGzejW1dlpyMwEYAAWEI/view?fullscreen This implementation is different from the original implementation in that it uses a hash table instead of a sorted list for linear counting.
IBSimilarity	Provides a framework for the family of information-based models, as described in Stéphane Clinchant and Eric Gaussier.
IdFieldMapper	A mapper for the _id field.
IdFieldMapper.Defaults
IdFieldMapper.TypeParser
IdOnlyFieldVisitor
IdsQueryBuilder	A query that will return only documents matching specific ids (and a type).
IgnoredFieldMapper	A field mapper that records fields that have been ignored because they were malformed.
IgnoredFieldMapper.Builder
IgnoredFieldMapper.Defaults
IgnoredFieldMapper.IgnoredFieldType
IgnoredFieldMapper.TypeParser
IllegalIndexShardStateException
IllegalShardRoutingStateException	This exception defines illegal states of shard routing
ImmutableOpenIntMap<VType>	An immutable map implementation based on open hash map.
ImmutableOpenIntMap.Builder<VType>
ImmutableOpenMap<KType,VType>	An immutable map implementation based on open hash map.
ImmutableOpenMap.Builder<KType,VType>
Impact	Per-document scoring factors.
Impacts	Information about upcoming impacts, ie.
ImpactsDISI	DocIdSetIterator that skips non-competitive docs thanks to the indexed impacts.
ImpactsEnum	Extension of PostingsEnum which also provides information about upcoming impacts.
ImpactsSource	Source of Impacts.
ImplementedBy	A pointer to the default implementation of a type.
InboundHandler
InboundMessage
InboundMessage.Request
InboundMessage.Response
IncludeExclude	Defines the include/exclude regular expression filtering for string terms aggregation.
IncludeExclude.Filter
IncludeExclude.LongFilter
IncludeExclude.OrdinalsFilter
IncludeExclude.SetBackedLongFilter
IncludeExclude.StringFilter
IncompatibleClusterStateVersionException	Thrown by Diff.apply(T) method
IncrementalClusterStateWriter	Tracks the metadata written to disk, allowing updated metadata to be written incrementally (i.e.
Independence	Computes the measure of divergence from independence for DFI scoring functions.
IndependenceChiSquared	Normalized chi-squared measure of distance from independence
IndependenceSaturated	Saturated measure of distance from independence
IndependenceStandardized	Standardized measure of distance from independence
Index	A value class representing the basic required properties of an Elasticsearch index.
IndexableField	Represents a single field for indexing.
IndexableFieldType	Describes the properties of a field.
IndexAction
IndexAnalyzers	IndexAnalyzers contains a name to analyzer mapping for a specific index.
IndexCache
IndexClosedException	Exception indicating that one or more requested indices are closed.
IndexCommit	Expert: represents a single commit into an index as seen by the IndexDeletionPolicy or IndexReader.
IndexComponent
IndexCreationException
IndexDeletionPolicy	Expert: policy for deletion of stale index commits.
IndexedNestedRingTester	Tests whether any of a set of LinearRings are nested inside another ring in the set, using a spatial index to speed up the comparisons.
IndexedPointInAreaLocator	Determines the Location of Coordinates relative to an areal geometry, using indexing for efficiency.
IndexerJobStats
IndexerState	IndexerState represents the internal state of the indexer.
IndexEventListener	An index event listener is the primary extension point for plugins and build-in services to react / listen to per-index and per-shard events.
IndexFieldData<FD extends AtomicFieldData>	Thread-safe utility class that allows to get per-segment values via the IndexFieldData.load(LeafReaderContext) method.
IndexFieldData.Builder
IndexFieldData.Global<FD extends AtomicFieldData>
IndexFieldData.XFieldComparatorSource
IndexFieldData.XFieldComparatorSource.Nested	Simple wrapper class around a filter that matches parent documents and a filter that matches child documents.
IndexFieldDataCache	A simple field data cache abstraction on the *index* level.
IndexFieldDataCache.Listener
IndexFieldDataCache.None
IndexFieldDataService
IndexFieldMapper
IndexFieldMapper.Builder
IndexFieldMapper.Defaults
IndexFieldMapper.TypeParser
IndexFileNames	This class contains useful constants representing filenames and extensions used by lucene, as well as convenience methods for querying whether a file name matches an extension (matchesExtension), as well as generating file names from a segment name, generation and extension ( fileNameFromGeneration, segmentFileName).
IndexFormatTooNewException	This exception is thrown when Lucene detects an index that is newer than this Lucene version.
IndexFormatTooOldException	This exception is thrown when Lucene detects an index that is too old for this Lucene version
IndexGeoPointFieldData	Specialization of IndexFieldData for geo points.
IndexGraveyard	A collection of tombstones for explicitly marking indices as deleted in the cluster state.
IndexGraveyard.Builder	A class to build an IndexGraveyard.
IndexGraveyard.IndexGraveyardDiff	A class representing a diff of two IndexGraveyard objects.
IndexGraveyard.Tombstone	An individual tombstone entry for representing a deleted index.
IndexId	Represents a single snapshotted index in the repository.
IndexingMemoryController
IndexingOperationListener	An indexing listener for indexing, delete, events.
IndexingOperationListener.CompositeListener	A Composite listener that multiplexes calls to each of the listeners methods.
IndexingSlowLog
IndexingStats
IndexingStats.Stats
IndexInput	Abstract base class for input from a file in a Directory.
IndexLifecycleClient
IndexLifecycleExplainResponse
IndexMetaData
IndexMetaData.Builder
IndexMetaData.State
IndexMetaDataUpdater	Observer that tracks changes made to RoutingNodes in order to update the primary terms and in-sync allocation ids in IndexMetaData once the allocation round has completed.
IndexModule	IndexModule represents the central extension point for index level custom implementations like: Similarity - New Similarity implementations can be registered through IndexModule.addSimilarity(String, TriFunction) while existing Providers can be referenced through Settings under the IndexModule.SIMILARITY_SETTINGS_PREFIX prefix along with the "type" value.
IndexModule.Type
IndexNameExpressionResolver
IndexNameExpressionResolver.Context
IndexNameExpressionResolver.DateMathExpressionResolver
IndexNotFoundException	Signals that no index was found in the Directory.
IndexNotFoundException
IndexNumericFieldData
IndexNumericFieldData.NumericType
IndexOptions	Controls how much information is stored in the postings lists.
IndexOrdinalsFieldData	Specialization of IndexFieldData for data that is indexed with ordinals.
IndexOrDocValuesQuery	A query that uses either an index structure (points or terms) or doc values in order to run a query, depending which one is more efficient.
IndexOutput	A DataOutput for appending data to a file in a Directory.
IndexOutputOutputStream	OutputStream that writes into underlying IndexOutput
IndexPrimaryShardNotAllocatedException	Thrown when some action cannot be performed because the primary shard of some shard group in an index has not been allocated post api action.
IndexQueryCache	The index-level query cache.
IndexReader	IndexReader is an abstract class, providing an interface for accessing a point-in-time view of an index.
IndexReader.CacheHelper	A utility class that gives hooks in order to help build a cache based on the data that is contained in this index.
IndexReader.CacheKey	A cache key identifying a resource that is being cached on.
IndexReader.ClosedListener	A listener that is called when a resource gets closed.
IndexReaderContext	A struct like class that represents a hierarchical relationship between IndexReader instances.
IndexRequest	Index request to index a typed JSON document into a specific index and make it searchable.
IndexRequestBuilder	An index document action request builder.
IndexResponse	A response of an index operation,
IndexResponse.Builder	Builder class for IndexResponse.
IndexRoutingTable	The IndexRoutingTable represents routing information for a single index.
IndexRoutingTable.Builder
IndexScopedSettings	Encapsulates all valid index level settings.
IndexSearcher	Implements search over a single IndexReader.
IndexSearcher.LeafSlice	A class holding a subset of the IndexSearchers leaf contexts to be executed within a single thread.
IndexSegments
IndexService
IndexService.IndexCreationContext
IndexService.ShardStoreDeleter
IndexSettings	This class encapsulates all index level settings and handles settings updates.
IndexShard
IndexShard.ShardFailure	Simple struct encapsulating a shard failure
IndexShardClosedException
IndexShardComponent
IndexShardNotRecoveringException
IndexShardNotStartedException
IndexShardRecoveringException
IndexShardRecoveryException
IndexShardRelocatedException
IndexShardRestoreException	Generic shard restore exception
IndexShardRestoreFailedException	Thrown when restore of a shard fails
IndexShardRoutingTable	IndexShardRoutingTable encapsulates all instances of a single shard.
IndexShardRoutingTable.Builder
IndexShardSegments
IndexShardSnapshotException	Generic shard snapshot exception
IndexShardSnapshotFailedException	Thrown when snapshot process is failed on a shard level
IndexShardSnapshotStatus	Represent shard snapshot status
IndexShardSnapshotStatus.Copy	Returns an immutable state of IndexShardSnapshotStatus at a given point in time.
IndexShardSnapshotStatus.Stage	Snapshot stage
IndexShardStartedException
IndexShardState
IndexShardStats
IndexShardUpgradeStatus
IndexSortConfig	Holds all the information that is used to build the sort order of an index.
IndexStats
IndexStats.IndexStatsBuilder
IndexStorePlugin	A plugin that provides alternative directory implementations.
IndexStorePlugin.DirectoryFactory	An interface that describes how to create a new directory instance per shard.
IndexTemplateMetaData
IndexTemplateMetaData
IndexTemplateMetaData.Builder
IndexTemplateMetaData.Builder
IndexTemplateMissingException
IndexTemplatesExistRequest	A request to check for the existence of index templates
IndexUpgradeStatus
IndexWarmer
IndexWarmer.Listener
IndexWarmer.TerminationHandle	A handle on the execution of warm-up action.
IndexWriter	An IndexWriter creates and maintains an index.
IndexWriter.DocStats	DocStats for this index
IndexWriter.IndexReaderWarmer	If DirectoryReader.open(IndexWriter) has been called (ie, this writer is in near real-time mode), then after a merge completes, this class can be invoked to warm the reader on the newly merged segment, before the merge commits.
IndexWriterConfig	Holds all the configuration that is used to create an IndexWriter.
IndexWriterConfig.OpenMode	Specifies the open mode for IndexWriter.
IndicesAdminClient	Administrative actions/operations against indices.
IndicesAliasesAction
IndicesAliasesClusterStateUpdateRequest	Cluster state update request that allows to add or remove aliases
IndicesAliasesRequest	A request to add/remove aliases for one or more indices.
IndicesAliasesRequest.AliasActions	Request to take one or more actions on one or more indexes and alias combinations.
IndicesAliasesRequest.AliasActions.Type
IndicesAliasesRequestBuilder	Builder for request to modify many aliases at once.
IndicesClient	A wrapper for the RestHighLevelClient that provides methods for accessing the Indices API.
IndicesClusterStateService
IndicesClusterStateService.AllocatedIndex<T extends IndicesClusterStateService.Shard>
IndicesClusterStateService.AllocatedIndices<T extends IndicesClusterStateService.Shard,U extends IndicesClusterStateService.AllocatedIndex<T>>
IndicesClusterStateService.AllocatedIndices.IndexRemovalReason
IndicesClusterStateService.Shard
IndicesClusterStateUpdateRequest<T extends IndicesClusterStateUpdateRequest<T>>	Base cluster state update request that allows to execute update against multiple indices
IndicesExistsAction
IndicesExistsRequest
IndicesExistsRequestBuilder
IndicesExistsResponse
IndicesFieldDataCache
IndicesFieldDataCache.FieldDataWeigher
IndicesFieldDataCache.Key
IndicesFollowStats
IndicesFollowStats.ShardFollowStats
IndicesModule	Configures classes and services that are shared by indices on each node.
IndicesOptions	Controls how to deal with unavailable concrete indices (closed or missing), how wildcard expressions are expanded to actual indices (all, closed or open indices) and how to deal with wildcard expressions that resolve to no indices.
IndicesOptions.Option
IndicesOptions.WildcardStates
IndicesPrivileges	Represents privileges over indices.
IndicesPrivileges.Builder
IndicesQueryCache
IndicesRequest	Needs to be implemented by all ActionRequest subclasses that relate to one or more indices.
IndicesRequest.Replaceable
IndicesRequestCache	The indices request cache allows to cache a shard level request stage responses, helping with improving similar requests that are potentially expensive (because of aggs for example).
IndicesSegmentResponse
IndicesSegmentsAction
IndicesSegmentsRequest
IndicesSegmentsRequestBuilder
IndicesService
IndicesService.ShardDeletionCheckResult	result type returned by signaling different reasons why a shard can / cannot be deleted
IndicesShardStoreRequestBuilder	Request builder for IndicesShardStoresRequest
IndicesShardStoresAction	ActionType for TransportIndicesShardStoresAction Exposes shard store information for requested indices.
IndicesShardStoresRequest	Request for IndicesShardStoresAction
IndicesShardStoresResponse	Response for IndicesShardStoresAction Consists of IndicesShardStoresResponse.StoreStatuss for requested indices grouped by indices and shard ids and a list of encountered node IndicesShardStoresResponse.Failures
IndicesShardStoresResponse.Failure	Single node failure while retrieving shard store information
IndicesShardStoresResponse.StoreStatus	Shard store information from a node
IndicesShardStoresResponse.StoreStatus.AllocationStatus	The status of the shard store with respect to the cluster
IndicesStatsAction
IndicesStatsRequest	A request to get indices level stats.
IndicesStatsRequestBuilder	A request to get indices level stats.
IndicesStatsResponse
IndicesStore
InetAddresses
InetAddressPoint	An indexed 128-bit InetAddress field.
InetAddressRange	An indexed InetAddress Range Field
InfBufLine	INERNAL: A buffered line of infinite length.
Influence	Influence field name and list of influence field values/score pairs
Influencer
InfoStream	Debugging API for Lucene classes such as IndexWriter and SegmentInfos.
IngestActionForwarder	A utility for forwarding ingest requests to ingest nodes in a round-robin fashion.
IngestClient	A wrapper for the RestHighLevelClient that provides methods for accessing the Ingest API.
IngestConditionalScript	A script used by ConditionalProcessor.
IngestConditionalScript.Factory
IngestDocument	Represents a single document being captured before indexing and holds the source and metadata (like id, type and index).
IngestDocument.MetaData
IngestInfo
IngestMetadata	Holds the ingest pipelines that are available in the cluster
IngestPlugin	An extension point for Plugin implementations to add custom ingest processors
IngestProcessorException	A dedicated wrapper for exceptions encountered executing an ingest processor.
IngestScript	A script used by the Ingest Script Processor.
IngestScript.Factory
IngestService	Holder class for several ingest related services.
IngestStats
IngestStats.PipelineStat	Container for pipeline stats.
IngestStats.ProcessorStat	Container for processor stats.
IngestStats.Stats
Inject	Annotates members of your implementation class (constructors, methods and fields) into which the Injector should inject values.
InjectionListener<I>	Listens for injections into instances of type I.
InjectionPoint	A constructor, field or method that can receive injections.
InjectionRequest<T>	A request to inject the instance fields and methods of an instance.
Injector	Builds the graphs of objects that make up your application.
InMemoryPersistedState
InnerHitBuilder
InnerHitContextBuilder	A builder for InnerHitsContext.InnerHitSubContext
InnerHitsContext	Context used for inner hits retrieval
InnerHitsContext.InnerHitSubContext	A SubSearchContext that associates TopDocs to each SearchHit in the parent search context
InnerHitsFetchSubPhase
InPlaceMergeSorter	Sorter implementation based on the merge-sort algorithm that merges in place (no extra memory will be allocated).
InputIterator	Interface for enumerating term,weight,payload triples for suggester consumption; currently only AnalyzingSuggester, FuzzySuggester and AnalyzingInfixSuggester support payloads.
InputIterator.InputIteratorWrapper	Wraps a BytesRefIterator as a suggester InputIterator, with all weights set to 1 and carries no payload
InputStreamDataInput	A DataInput wrapping a plain InputStream.
InputStreamIndexInput
InputStreamStreamInput
InstanceBinding<T>	A binding to a single instance.
InstanceBindingImpl<T>
InstanceShardOperationRequest<Request extends InstanceShardOperationRequest<Request>>
InstanceShardOperationRequestBuilder<Request extends InstanceShardOperationRequest<Request>,Response extends ActionResponse,RequestBuilder extends InstanceShardOperationRequestBuilder<Request,Response,RequestBuilder>>
InStream	A interface for classes providing an input stream of bytes.
IntArray	Abstraction of an array of integer values.
IntArrayList	An array-backed list of ints.
IntBlockPool	A pool for int blocks similar to ByteBlockPool
IntBlockPool.Allocator	Abstract class for allocating and freeing int blocks.
IntBlockPool.DirectAllocator	A simple IntBlockPool.Allocator that never recycles.
IntBlockPool.SliceReader	A IntBlockPool.SliceReader that can read int slices written by a IntBlockPool.SliceWriter
IntBlockPool.SliceWriter	A IntBlockPool.SliceWriter that allows to write multiple integer slices into a given IntBlockPool.
IntCollection	A collection allows basic, efficient operations on sets of elements (difference and intersection).
IntContainer	A generic container holding ints.
IntCursor	A cursor over a collection of ints.
InteriorIntersectionFinderAdder	Finds interior intersections between line segments in NodedSegmentStrings, and adds them as nodes using NodedSegmentString.addIntersection(LineIntersector, int, int, int).
InteriorPoint	Computes an interior point of a Geometry.
InteriorPointArea	Computes a point in the interior of an areal geometry.
InteriorPointLine	Computes a point in the interior of an linear geometry.
InteriorPointPoint	Computes a point in the interior of an point geometry.
InternalAdjacencyMatrix
InternalAdjacencyMatrix.InternalBucket
InternalAggregation	An internal implementation of Aggregation.
InternalAggregation.ReduceContext
InternalAggregationProfileTree
InternalAggregations	An internal implementation of Aggregations.
InternalAutoDateHistogram	Implementation of Histogram.
InternalAutoDateHistogram.Bucket
InternalAvg
InternalBinaryRange	A range aggregation for data that is encoded in doc values using a binary representation.
InternalBinaryRange.Bucket
InternalBucketMetricValue
InternalCardinality
InternalClusterInfoService	InternalClusterInfoService provides the ClusterInfoService interface, routinely updated on a timer.
InternalComposite
InternalComposite.InternalBucket
InternalContext	Internal context.
InternalDateHistogram	Implementation of Histogram.
InternalDateHistogram.Bucket
InternalDateRange
InternalDateRange.Bucket
InternalDateRange.Factory
InternalDerivative
InternalEngine
InternalEngine.DeletionStrategy
InternalEngine.IndexingStrategy
InternalEngineFactory
InternalExtendedStats
InternalExtendedStatsBucket
InternalFactory<T>	Creates objects which will be injected.
InternalFactory.Instance<T>	ES: An factory that returns a pre created instance.
InternalFilter
InternalFilters
InternalFilters.InternalBucket
InternalGeoBounds
InternalGeoCentroid	Serialization and merge logic for GeoCentroidAggregator.
InternalGeoDistance
InternalGeoDistance.Factory
InternalGeoGrid<B extends InternalGeoGridBucket>	Represents a grid of cells where each cell's location is determined by a specific geo hashing algorithm.
InternalGeoGridBucket<B extends InternalGeoGridBucket>
InternalGeoHashGrid	Represents a grid of cells where each cell's location is determined by a geohash.
InternalGeoHashGridBucket
InternalGeoTileGrid	Represents a grid of cells where each cell's location is determined by a geohash.
InternalGeoTileGridBucket
InternalGlobal	A global scope get (the document set on which we aggregate is all documents in the search context (ie.
InternalHDRPercentileRanks
InternalHDRPercentileRanks.Iter
InternalHDRPercentiles
InternalHDRPercentiles.Iter
InternalHistogram	Implementation of Histogram.
InternalHistogram.Bucket
InternalMappedRareTerms<A extends InternalRareTerms<A,B>,B extends InternalRareTerms.Bucket<B>>
InternalMappedSignificantTerms<A extends InternalMappedSignificantTerms<A,B>,B extends InternalSignificantTerms.Bucket<B>>
InternalMappedTerms<A extends InternalTerms<A,B>,B extends InternalTerms.Bucket<B>>	Common superclass for results of the terms aggregation on mapped fields.
InternalMax
InternalMedianAbsoluteDeviation
InternalMin
InternalMissing
InternalMultiBucketAggregation<A extends InternalMultiBucketAggregation,B extends InternalMultiBucketAggregation.InternalBucket>
InternalMultiBucketAggregation.InternalBucket
InternalNested	Result of the NestedAggregator.
InternalNumericMetricsAggregation
InternalNumericMetricsAggregation.MultiValue
InternalNumericMetricsAggregation.SingleValue
InternalOrder	Implementations for MultiBucketsAggregation.Bucket ordering strategies.
InternalOrder.Aggregation	MultiBucketsAggregation.Bucket ordering strategy to sort by a sub-aggregation.
InternalOrder.CompoundOrder	MultiBucketsAggregation.Bucket ordering strategy to sort by multiple criteria.
InternalOrder.Parser	Contains logic for parsing a BucketOrder from a XContentParser.
InternalOrder.Streams	Contains logic for reading/writing BucketOrder from/to streams.
InternalPercentilesBucket
InternalPercentilesBucket.Iter
InternalProfileCollector	This class wraps a Lucene Collector and times the execution of: - setScorer() - collect() - doSetNextReader() - needsScores() InternalProfiler facilitates the linking of the Collector graph
InternalRange<B extends InternalRange.Bucket,R extends InternalRange<B,R>>
InternalRange.Bucket
InternalRange.Factory<B extends InternalRange.Bucket,R extends InternalRange<B,R>>
InternalRareTerms<A extends InternalRareTerms<A,B>,B extends InternalRareTerms.Bucket<B>>
InternalRareTerms.Bucket<B extends InternalRareTerms.Bucket<B>>
InternalRareTerms.Bucket.Reader<B extends InternalRareTerms.Bucket<B>>	Reads a bucket.
InternalReverseNested	Result of the ReverseNestedAggregator.
InternalSampler
InternalScriptedMetric
InternalScrollSearchRequest
InternalSearchResponse	SearchResponseSections subclass that can be serialized over the wire.
InternalSettingsPreparer
InternalSignificantTerms<A extends InternalSignificantTerms<A,B>,B extends InternalSignificantTerms.Bucket<B>>	Result of the significant terms aggregation.
InternalSignificantTerms.Bucket<B extends InternalSignificantTerms.Bucket<B>>
InternalSignificantTerms.Bucket.Reader<B extends InternalSignificantTerms.Bucket<B>>	Reads a bucket.
InternalSimpleValue
InternalSingleBucketAggregation	A base class for all the single bucket aggregations.
InternalStats
InternalStatsBucket
InternalSum
InternalTDigestPercentileRanks
InternalTDigestPercentileRanks.Iter
InternalTDigestPercentiles
InternalTDigestPercentiles.Iter
InternalTerms<A extends InternalTerms<A,B>,B extends InternalTerms.Bucket<B>>
InternalTerms.Bucket<B extends InternalTerms.Bucket<B>>
InternalTerms.Bucket.Reader<B extends InternalTerms.Bucket<B>>	Reads a bucket.
InternalTopHits	Results of the TopHitsAggregator.
InternalValueCount	An internal implementation of ValueCount.
InternalWeightedAvg
IntersectionAdder	Computes the possible intersections between two line segments in NodedSegmentStrings and adds them to each string using NodedSegmentString.addIntersection(LineIntersector, int, int, int).
IntersectionMatrix	Models a Dimensionally Extended Nine-Intersection Model (DE-9IM) matrix.
IntersectsPrefixTreeQuery	A Query matching documents that have an SpatialRelation.INTERSECTS (i.e.
IntervalBuilder	Constructs an IntervalsSource based on analyzed text
IntervalFilter	Wraps an IntervalIterator and passes through those intervals that match the IntervalFilter.accept() function
IntervalFilterScript	Base class for scripts used as interval filters, see IntervalsSourceProvider.IntervalFilter
IntervalFilterScript.Factory
IntervalFilterScript.Interval
IntervalIterator	A DocIdSetIterator that also allows iteration over matching intervals in a document.
IntervalQuery	A query that retrieves documents containing intervals returned from an IntervalsSource Static constructor functions for various different sources can be found in the Intervals class Scores for this query are computed as a function of the sloppy frequency of intervals appearing in a particular document.
IntervalQueryBuilder	Builder for IntervalQuery
IntervalRTreeBranchNode
IntervalRTreeLeafNode
IntervalRTreeNode
IntervalRTreeNode.NodeComparator
Intervals	Constructor functions for IntervalsSource types These sources implement minimum-interval algorithms taken from the paper Efficient Optimally Lazy Algorithms for Minimal-Interval Semantics By default, sources that are sensitive to internal gaps (e.g.
IntervalsSource	A helper class for IntervalQuery that provides an IntervalIterator for a given field and segment Static constructor functions for various different sources can be found in the Intervals class
IntervalsSourceProvider	Factory class for IntervalsSource Built-in sources include IntervalsSourceProvider.Match, which analyzes a text string and converts it to a proximity source (phrase, ordered or unordered depending on how strict the matching should be); IntervalsSourceProvider.Combine, which allows proximity queries between different sub-sources; and IntervalsSourceProvider.Disjunction.
IntervalsSourceProvider.Combine
IntervalsSourceProvider.Disjunction
IntervalsSourceProvider.IntervalFilter
IntervalsSourceProvider.Match
IntervalsSourceProvider.Prefix
IntervalsSourceProvider.Wildcard
IntHashSet	A hash set of ints, implemented using using open addressing with linear probing for collision resolution.
IntIndexedContainer	An indexed container provides random access to elements based on an index.
IntLookupContainer	Marker interface for containers that can check if they contain a given object in at least time O(log n) and ideally in amortized constant time O(1).
IntObjectAssociativeContainer<VType>	An associative container from keys to (one or possibly more) values.
IntObjectCursor<VType>	A cursor over entries of an associative container (int keys and Object values).
IntObjectHashMap<VType>	A hash map of int to Object, implemented using open addressing with linear probing for collision resolution.
IntObjectMap<VType>	An associative container with unique binding from keys to a single value.
IntObjectPredicate<VType>	A predicate that applies to int, Object pairs.
IntObjectProcedure<VType>	A procedure that applies to int, Object pairs.
IntPoint	An indexed int field for fast range filters.
IntPredicate	A predicate that applies to int objects.
IntProcedure	A procedure that applies to int objects.
IntRange	An indexed Integer Range field.
IntroSelector	Implementation of the quick select algorithm.
IntroSorter	Sorter implementation based on a variant of the quicksort algorithm called introsort: when the recursion level exceeds the log of the length of the array to sort, it falls back to heapsort.
IntSequenceOutputs	An FST Outputs implementation where each output is a sequence of ints.
IntSet	A set of ints.
IntsRef	Represents int[], as a slice (offset + length) into an existing int[].
IntsRefBuilder	A builder for IntsRef instances.
InvalidAggregationPathException
InvalidAliasNameException
InvalidateApiKeyRequest	Request for invalidating API key(s) so that it can no longer be used
InvalidateApiKeyResponse
InvalidateTokenRequest	Request to invalidate a OAuth2 token within the Elasticsearch cluster.
InvalidateTokenResponse	Response when invalidating one or multiple OAuth2 access tokens and refresh tokens.
InvalidIndexNameException
InvalidIndexTemplateException
InvalidShapeException	A shape was constructed but failed because, based on the given parts, it's invalid.
InvalidSnapshotNameException	Thrown on the attempt to create a snapshot with invalid name
InvalidTokenOffsetsException	Exception thrown if TokenStream Tokens are incompatible with provided text
InvalidTypeNameException
IOContext	IOContext holds additional details on the merge/search context.
IOContext.Context	Context is a enumerator which specifies the context in which the Directory is being used for.
IOSupplier<T>	This is a result supplier that is allowed to throw an IOException.
IOUtils	This class emulates the new Java 7 "Try-With-Resources" statement.
IOUtils	Utilities for common I/O methods.
IOUtils.IOConsumer<T>	An IO operation with a single input.
IpFieldMapper	A FieldMapper for ip addresses.
IpFieldMapper.Builder
IpFieldMapper.Defaults
IpFieldMapper.IpFieldType
IpFieldMapper.IpFieldType.IpScriptDocValues
IpFieldMapper.TypeParser
IpRangeAggregationBuilder
IpRangeAggregationBuilder.Range
IsSimpleOp	Tests whether a Geometry is simple.
IsValidOp	Implements the algorithms required to compute the isValid() method for Geometrys.
ItemBoundable	Boundable wrapper for a non-Boundable spatial object.
ItemDistance	A function method which computes the distance between two ItemBoundables in an STRtree.
ItemVisitor	A visitor for items in a SpatialIndex.
Iterables
Iterators
JarHell	Simple check for duplicate class files across the classpath.
JaroWinklerDistance	Similarity measure for short strings such as person names.
JavaDateMathParser	A parser for date/time formatted text with optional date math.
JavaVersion
JLHScore
JLHScore.JLHScoreBuilder
Job	This class represents a configured and created Job.
Job.Builder
JobState	Jobs whether running or complete are in one of these states.
JobStats	Class containing the statistics for a Machine Learning job.
JobUpdate	POJO for updating an existing Machine Learning Job
JobUpdate.Builder
JobUpdate.DetectorUpdate
JodaCompatibleZonedDateTime	A wrapper around ZonedDateTime that exposes joda methods for backcompat.
Join	Triggered by a StartJoinRequest, instances of this class represent join votes, and have a source and target node.
JoinHelper
JoinHelper.JoinCallback
JoinRequest
JoinTaskExecutor
JoinTaskExecutor.Task
JSONParser
JSONParser.ParseException
JSONUtil
JSONWriter
JSONWriter.Writable	Implement this interface on your class to support serialization
JsonXContent	A JSON based content implementation using Jackson.
JsonXContentGenerator
JsonXContentParser
JtsBinaryCodec	Writes shapes in WKB, if it isn't otherwise supported by the superclass.
JtsGeoJSONWriter
JtsGeometry	Wraps a JTS Geometry (i.e.
JtsPoint	Wraps a Point.
JtsPolyshapeWriter
JtsShapeFactory	Enhances ShapeFactoryImpl with support for Polygons using JTS.
JtsSpatialContext	Enhances the default SpatialContext with support for Polygons (and other geometries) using JTS.
JtsSpatialContextFactory	See SpatialContextFactory.makeSpatialContext(java.util.Map, ClassLoader).
JtsWKTWriter	Writes the WKT using JTS directly
JvmGcMonitorService
JvmInfo
JvmInfo.Mem
JvmService
JvmStats
JvmStats.BufferPool
JvmStats.Classes
JvmStats.GarbageCollector
JvmStats.GarbageCollectors
JvmStats.Mem
JvmStats.MemoryPool
JvmStats.Threads
KeepOnlyLastCommitDeletionPolicy	This IndexDeletionPolicy implementation that keeps only the most recent commit and immediately removes all prior commits after a new commit is done.
Key<T>	Binding key consisting of an injection type and an optional annotation.
KeyComparable<T extends MultiBucketsAggregation.Bucket & KeyComparable<T>>	Defines behavior for comparing bucket keys to imposes a total ordering of buckets of the same type.
KeyedLock<T>	This class manages locks.
KeyStoreWrapper	A disk based container for sensitive settings in Elasticsearch.
KeywordAnalyzer	"Tokenizes" the entire stream as a single token.
KeywordAnalyzerProvider
KeywordAttribute	This attribute can be used to mark a token as a keyword.
KeywordFieldMapper	A field mapper for keywords.
KeywordFieldMapper.Builder
KeywordFieldMapper.Defaults
KeywordFieldMapper.KeywordFieldType
KeywordFieldMapper.TypeParser
KeywordMarkerFilter	Marks terms as keywords via the KeywordAttribute.
KeywordTokenizer	Emits the entire input as a single token.
Label	A Label indicates the topological relationship of a component of a topology graph to a given Geometry.
LabelledCharArrayMatcher	Associates a label with a CharArrayMatcher to distinguish different sources for terms in highlighting
LagDetector	A publication can succeed and complete before all nodes have applied the published state and acknowledged it; however we need every node eventually either to apply the published state (or a later state) or be removed from the cluster.
Lambda	The lambda (λw) parameter in information-based models.
LambdaDF	Computes lambda as docFreq+1 / numberOfDocuments+1.
LambdaTTF	Computes lambda as totalTermFreq+1 / numberOfDocuments+1.
Laplace	An additive smoothing model.
LatchedActionListener<T>	An action listener that allows passing in a CountDownLatch that will be counted down after onResponse or onFailure is called
LatLonDocValuesField	An per-document location field.
LatLonDocValuesPointInPolygonQuery	Polygon query for LatLonDocValuesField.
LatLonPoint	An indexed location field.
LatLonShape	An geo shape utility class for indexing and searching gis geometries whose vertices are latitude, longitude values (in decimal degrees).
LeaderBulkByScrollTaskState	Tracks the state of sliced subtasks and provides unified status information for a sliced BulkByScrollRequest.
LeaderChecker	The LeaderChecker is responsible for allowing followers to check that the currently elected leader is still connected and healthy.
LeafBucketCollector	Per-leaf bucket collector.
LeafBucketCollectorBase	A LeafBucketCollector that delegates all calls to the sub leaf aggregator and sets the scorer on its source of values if it implements ScorerAware.
LeafCollector	Collector decouples the score from the collected doc: the score computation is skipped entirely if it's not needed.
LeafDocLookup
LeafFieldComparator	Expert: comparator that gets instantiated on each leaf from a top-level FieldComparator instance.
LeafFieldsLookup
LeafMetaData	Provides read-only metadata about a leaf.
LeafReader	LeafReader is an abstract class, providing an interface for accessing an index.
LeafReaderContext	IndexReaderContext for LeafReader instances.
LeafScoreFunction	Per-leaf ScoreFunction.
LeafSearchLookup	Per-segment version of SearchLookup.
LeafSimScorer	Similarity.SimScorer on a specific LeafReader.
LegacyBM25Similarity	Deprecated. BM25Similarity should be used instead
LegacyCell	The base for the original two SPT's: Geohash and Quad.
LegacyGeoShapeFieldMapper	Deprecated. use GeoShapeFieldMapper
LegacyGeoShapeFieldMapper.Builder
LegacyGeoShapeFieldMapper.DeprecatedParameters	Deprecated.
LegacyGeoShapeFieldMapper.DeprecatedParameters.Defaults
LegacyGeoShapeFieldMapper.DeprecatedParameters.Names
LegacyGeoShapeFieldMapper.DeprecatedParameters.PrefixTrees
LegacyGeoShapeFieldMapper.GeoShapeFieldType
LegacyGeoShapeIndexer
LegacyGeoShapeQueryProcessor
LegacyShapeReader	Deprecated.
LegacyShapeWriter	Deprecated.
Length	Functions for computing length.
LetterTokenizer	A LetterTokenizer is a tokenizer that divides text at non-letters.
LevenshteinAutomata	Class to construct DFAs that match a word within some edit distance.
LevenshteinDistance	Levenshtein edit distance class.
LicenseClient	A wrapper for the RestHighLevelClient that provides methods for accessing the Elastic License-related methods
LicensesStatus
LicenseStatus	Status of an X-Pack license.
Lifecycle	Lifecycle state.
Lifecycle.State
LifecycleAction	interface for index lifecycle management actions
LifecycleComponent
LifecycleListener
LifecycleManagementStatusRequest	A TimedRequest to get the current status of index lifecycle management.
LifecycleManagementStatusResponse	The current status of index lifecycle management.
LifecyclePolicy	Represents the lifecycle of an index from creation to deletion.
LifecyclePolicyMetadata
LimitedFiniteStringsIterator	FiniteStringsIterator which limits the number of iterated accepted strings.
Line	Represents a line on the earth's surface.
Line	Represents a Line on the earth's surface in lat/lon decimal degrees and optional altitude in meters.
Line2D	2D geo line implementation represented as a balanced interval tree of edges.
Lineal	Identifies Geometry subclasses which are 1-dimensional and have components which are LineStrings.
LinearComponentExtracter	Extracts all the 1-dimensional (LineString) components from a Geometry.
LinearDecayFunctionBuilder
LinearInterpolatingScorer
LinearInterpolation	Linear interpolation smoothing model.
LinearIterator	Used for iterating through histogram values in linear steps.
LinearModel	Calculate a linearly weighted moving average, such that older values are linearly less important.
LinearModel.LinearModelBuilder
LinearRing	Represents a closed line on the earth's surface in lat/lon decimal degrees and optional altitude in meters.
LinearRing	Models an OGC SFS LinearRing.
LineBuilder	Forms JTS LineStrings out of a the graph of DirectedEdges created by an OverlayOp.
LineIntersector	A LineIntersector is an algorithm that can both test whether two line segments intersect and compute the intersection point(s) if they do.
LineMergeDirectedEdge	A DirectedEdge of a LineMergeGraph.
LineMergeEdge	An edge of a LineMergeGraph.
LineMergeGraph	A planar graph of edges that is analyzed to sew the edges together.
LineMerger	Merges a collection of linear components to form maximal-length linestrings.
LineSegment	Represents a line segment defined by two Coordinates.
LineString	Models an OGC-style LineString.
LineStringBuilder
LineStringSnapper	Snaps the vertices and segments of a LineString to a set of target snap vertices.
LinkedBindingBuilder<T>	See the EDSL examples at Binder.
LinkedBindingImpl<T>
LinkedKeyBinding<T>	A binding to a linked key.
LinkedProviderBindingImpl<T>
ListenableActionFuture<T>	An ActionFuture that listeners can be added to.
ListenableFuture<V>	A future implementation that allows for the result to be passed to listeners waiting for notification.
ListTasksAction	ActionType for retrieving a list of currently running tasks
ListTasksRequest	A request to get node tasks
ListTasksRequestBuilder	Builder for the request to retrieve the list of tasks running on the specified nodes
ListTasksResponse	Returns the list of tasks currently running on the nodes
LiveDocsFormat	Format for live/deleted documents
LiveIndexWriterConfig	Holds all the configuration used by IndexWriter with few setters for settings that can be changed on an IndexWriter instance "live".
LivenessRequest	Transport level private response for the transport handler registered under "cluster:monitor/nodes/liveness"
LivenessResponse	Transport level private response for the transport handler registered under "cluster:monitor/nodes/liveness"
LMDirichletSimilarity	Bayesian smoothing using Dirichlet priors.
LMJelinekMercerSimilarity	Language model based on the Jelinek-Mercer smoothing method.
LMSimilarity	Abstract superclass for language modeling Similarities.
LMSimilarity.CollectionModel	A strategy for computing the collection language model.
LMSimilarity.DefaultCollectionModel	Models p(w|C) as the number of occurrences of the term in the collection, divided by the total number of tokens + 1.
LMSimilarity.LMStats	Stores the collection distribution of the current term.
LocalAllocateDangledIndices
LocalAllocateDangledIndices.AllocateDangledRequest
LocalAllocateDangledIndices.AllocateDangledResponse
LocalCheckpointTracker	This class generates sequences numbers and keeps track of the so-called "local checkpoint" which is the highest number for which all previous sequence numbers have been processed (inclusive).
LocalClusterUpdateTask	Used to apply state updates on nodes that are not necessarily master
LocaleUtils	Utilities for for dealing with Locale objects
LocalNodeMasterListener	Enables listening to master changes events of the local node (when the local node becomes the master, and when the local node cease being a master).
Location	Constants representing the different topological locations which can occur in a Geometry.
Lock	An interprocess mutex lock.
LockFactory	Base class for Locking implementation.
LockObtainFailedException	This exception is thrown when the write.lock could not be acquired.
LockReleaseFailedException	This exception is thrown when the write.lock could not be released.
LockValidatingDirectoryWrapper	This class makes a best-effort check that a provided Lock is valid before any destructive filesystem operation.
LogarithmicIterator	Used for iterating through histogram values in logarithmically increasing levels.
LogConfigurator
LoggerInfoStream	An InfoStream (for Lucene's IndexWriter) that redirects messages to "lucene.iw.ifd" and "lucene.iw" Logger.trace.
LoggerMessageFormat	Format string for Elasticsearch log messages.
Loggers	A set of utilities around Logging.
LoggingDeprecationHandler	Logs deprecations to the DeprecationLogger.
LongArray	Abstraction of an array of long values.
LongArrayList	An array-backed list of longs.
LongBitSet	BitSet of fixed length (numBits), backed by accessible (LongBitSet.getBits()) long[], accessed with a long index.
LongCollection	A collection allows basic, efficient operations on sets of elements (difference and intersection).
LongContainer	A generic container holding longs.
LongCursor	A cursor over a collection of longs.
LongHash	Specialized hash table implementation similar to BytesRefHash that maps long values to ids.
LongHashSet	A hash set of longs, implemented using using open addressing with linear probing for collision resolution.
LongIndexedContainer	An indexed container provides random access to elements based on an index.
LongIntAssociativeContainer	An associative container from keys to (one or possibly more) values.
LongIntCursor	A cursor over entries of an associative container (long keys and int values).
LongIntHashMap	A hash map of long to int, implemented using open addressing with linear probing for collision resolution.
LongIntMap	An associative container with unique binding from keys to a single value.
LongIntPredicate	A predicate that applies to long, int pairs.
LongIntProcedure	A procedure that applies to long, int pairs.
LongLookupContainer	Marker interface for containers that can check if they contain a given object in at least time O(log n) and ideally in amortized constant time O(1).
LongObjectAssociativeContainer<VType>	An associative container from keys to (one or possibly more) values.
LongObjectCursor<VType>	A cursor over entries of an associative container (long keys and Object values).
LongObjectHashMap<VType>	A hash map of long to Object, implemented using open addressing with linear probing for collision resolution.
LongObjectMap<VType>	An associative container with unique binding from keys to a single value.
LongObjectPagedHashMap<T>	A hash table from native longs to objects.
LongObjectPagedHashMap.Cursor<T>
LongObjectPredicate<VType>	A predicate that applies to long, Object pairs.
LongObjectProcedure<VType>	A procedure that applies to long, Object pairs.
LongPoint	An indexed long field for fast range filters.
LongPredicate	A predicate that applies to long objects.
LongProcedure	A procedure that applies to long objects.
LongRange	An indexed Long Range field.
LongRareTerms	Result of the RareTerms aggregation when the field is some kind of whole number like a integer, long, or a date.
LongRareTerms.Bucket
LongRareTermsAggregator	An aggregator that finds "rare" string values (e.g.
LongSet	A set of longs.
LongsRef	Represents long[], as a slice (offset + length) into an existing long[].
LongTerms	Result of the TermsAggregator when the field is some kind of whole number like a integer, long, or a date.
LongTerms.Bucket
LongTermsAggregator
LongValues	Per-segment, per-document long values, which can be calculated at search-time
LongValues	Abstraction over an array of longs.
LongValuesComparatorSource	Comparator source for long values.
LongValuesSource	Base class for producing LongValues To obtain a LongValues object for a leaf reader, clients should call LongValuesSource.rewrite(IndexSearcher) against the top-level searcher, and then LongValuesSource.getValues(LeafReaderContext, DoubleValues).
Lookup	Simple Lookup interface for CharSequence suggestions.
Lookup.LookupPriorityQueue	A PriorityQueue collecting a fixed size of high priority Lookup.LookupResult
Lookup.LookupResult	Result of a lookup.
LowerCaseFilter	Normalizes token text to lower case.
LRUQueryCache	A QueryCache that evicts queries using a LRU (least-recently-used) eviction policy in order to remain under a given maximum size and number of bytes used.
LSBRadixSorter	A LSB Radix sorter for unsigned int values.
Lucene
Lucene50CompoundFormat	Lucene 5.0 compound file format
Lucene50LiveDocsFormat	Lucene 5.0 live docs format
Lucene50StoredFieldsFormat	Lucene 5.0 stored fields format.
Lucene50StoredFieldsFormat.Mode	Configuration option for stored fields.
Lucene50TermVectorsFormat	Lucene 5.0 term vectors format.
Lucene60FieldInfosFormat	Lucene 6.0 Field Infos format.
Lucene60PointsFormat	Lucene 6.0 point format, which encodes dimensional values in a block KD-tree structure for fast 1D range and N dimensional shape intersection filtering.
Lucene60PointsReader	Reads point values previously written with Lucene60PointsWriter
Lucene60PointsWriter	Writes dimensional values
Lucene70SegmentInfoFormat	Lucene 7.0 Segment info format.
Lucene80NormsFormat	Lucene 8.0 Score normalization format.
Lucene84Codec	Implements the Lucene 8.4 index format, with configurable per-field postings and docvalues formats.
Lucene84PostingsFormat	Lucene 5.0 postings format, which encodes postings in packed integer blocks for fast decode.
Lucene84PostingsFormat.IntBlockTermState	Holds all state required for Lucene84PostingsReader to produce a PostingsEnum without re-seeking the terms dict.
Lucene84PostingsReader	Concrete class that reads docId(maybe frq,pos,offset,payloads) list with postings format.
Lucene84PostingsWriter	Concrete class that writes docId(maybe frq,pos,offset,payloads) list with postings format.
LuceneLevenshteinDistance	Damerau-Levenshtein (optimal string alignment) implemented in a consistent way as Lucene's FuzzyTermsEnum with the transpositions option enabled.
MacAddressProvider
MachineLearningClient	Machine Learning API client wrapper for the RestHighLevelClient
MainAction
MainRequest
MainRequest
MainResponse
MainResponse
MainResponse.Version
Manifest	This class represents the manifest file, which is the entry point for reading meta data from disk.
MapBinder<K,V>	An API to bind multiple map entries separately, only to later inject them as a complete map.
MapBinder.RealMapBinder<K,V>	The actual mapbinder plays several roles:
MapBinder.RealMapBinder.MapBinderProviderWithDependencies<K,V>
MapBuilder<K,V>
MappedFieldType	This defines the core properties and functions to operate on a field.
MappedFieldType.Relation	An enum used to describe the relation between the range of terms in a shard when compared with a query range
MappedMultiFields	A Fields implementation that merges multiple Fields into one, and maps around deleted documents.
Mapper
Mapper.Builder<T extends Mapper.Builder,Y extends Mapper>
Mapper.BuilderContext
Mapper.TypeParser
Mapper.TypeParser.ParserContext
MapperException
MapperParsingException
MapperPlugin	An extension point for Plugin implementations to add custom mappers
MapperRegistry	A registry for all field mappers.
MapperService
MapperService.MergeReason	The reason why a mapping is being merged.
Mapping	Wrapper around everything that defines a mapping, without references to utility classes like MapperService, ...
MappingMetaData	Mapping configuration for a type.
MappingMetaData.Routing
MappingUpdatedAction	Called by shards in the cluster when their mapping was dynamically updated and it needs to be updated in the cluster state meta data (and broadcast to all members).
MappingUpdatePerformer
MapXContentParser	Wraps a map generated by XContentParser's map() method into XContent Parser
MasterFaultDetection	A fault detection that pings the master periodically to see if its alive.
MasterFaultDetection.Listener
MasterFaultDetection.MasterPingRequest
MasterFaultDetection.MasterPingResponseResponse
MasterFaultDetection.ThisIsNotTheMasterYouAreLookingForException	Thrown when a ping reaches the wrong node
MasterNodeChangePredicate
MasterNodeOperationRequestBuilder<Request extends MasterNodeRequest<Request>,Response extends ActionResponse,RequestBuilder extends MasterNodeOperationRequestBuilder<Request,Response,RequestBuilder>>	Base request builder for master node operations
MasterNodeReadOperationRequestBuilder<Request extends MasterNodeReadRequest<Request>,Response extends ActionResponse,RequestBuilder extends MasterNodeReadOperationRequestBuilder<Request,Response,RequestBuilder>>	Base request builder for master node read operations that can be executed on the local node as well
MasterNodeReadRequest<Request extends MasterNodeReadRequest<Request>>	Base request for master based read operations that allows to read the cluster state from the local node if needed
MasterNodeRequest<Request extends MasterNodeRequest<Request>>	A based request for master based operation.
MasterNotDiscoveredException
MasterService
MatchAllDocsQuery	A query that matches all documents.
MatchAllQueryBuilder	A query that matches on all documents.
MatchBoolPrefixQueryBuilder	The boolean prefix query analyzes the input text and creates a boolean query containing a Term query for each term, except for the last term, which is used to create a prefix query
MatchedQueriesFetchSubPhase
Matcher<T>	Returns true or false for a given input.
MatcherAndConverter
Matchers	Matcher implementations.
Matches	Reports the positions and optionally offsets of all matching terms in a query for a single document To obtain a MatchesIterator for a particular field, call Matches.getMatches(String).
MatchesIterator	An iterator over match positions (and optionally offsets) for a single document and field To iterate over the matches, call MatchesIterator.next() until it returns false, retrieving positions and/or offsets after each call.
MatchesUtils	Contains static functions that aid the implementation of Matches and MatchesIterator interfaces.
MatchNoDocsQuery	A query that matches no documents.
MatchNoneQueryBuilder	A query that matches no document.
MatchPhrasePrefixQueryBuilder	Match query is a query that analyzes the text and constructs a phrase prefix query as the result of the analysis.
MatchPhraseQueryBuilder	Match query is a query that analyzes the text and constructs a phrase query as the result of the analysis.
MatchQuery
MatchQuery.Type
MatchQuery.ZeroTermsQuery
MatchQueryBuilder	Match query is a query that analyzes the text and constructs a query as the result of the analysis.
MathUtil	Math static utility methods.
MathUtil	Various utility functions for mathematical and numerical operations.
Max	An aggregation that computes the maximum of the values in the current bucket.
MaxAgeCondition	Condition for index maximum age.
MaxAggregationBuilder
MaxBucketPipelineAggregationBuilder
MaxBucketPipelineAggregator
MaxDocsCondition	Condition for maximum index docs.
MaximalEdgeRing	A ring of DirectedEdges which may contain nodes of degree > 2.
MaxNonCompetitiveBoostAttribute	Add this Attribute to a fresh AttributeSource before calling MultiTermQuery.getTermsEnum(Terms,AttributeSource).
MaxRetryAllocationDecider	An allocation decider that prevents shards from being allocated on any node if the shards allocation has been retried N times without success.
MaxScoreCollector	A collector that computes the maximum score.
MaxSizeCondition	A size-based condition for an index size.
MCIndexNoder	Nodes a set of SegmentStrings using a index based on MonotoneChains and a SpatialIndex.
MCIndexNoder.SegmentOverlapAction
MCIndexPointSnapper	"Snaps" all SegmentStrings in a SpatialIndex containing MonotoneChains to a given HotPixel.
MCIndexPointSnapper.HotPixelSnapAction
MCIndexSegmentSetMutualIntersector	Intersects two sets of SegmentStrings using a index based on MonotoneChains and a SpatialIndex.
MCIndexSegmentSetMutualIntersector.SegmentOverlapAction
MCIndexSnapRounder	Uses Snap Rounding to compute a rounded, fully noded arrangement from a set of SegmentStrings.
MeanMetric
MedianAbsoluteDeviation	An aggregation that approximates the median absolute deviation of a numeric field
MedianAbsoluteDeviationAggregationBuilder
MedianAbsoluteDeviationAggregator
MedianAbsoluteDeviationAggregatorFactory
MembershipAction
MembershipAction.JoinCallback
MembershipAction.JoinRequest
MembershipAction.LeaveRequest
MembershipAction.MembershipListener
MembersInjector<T>	Injects dependencies into the fields and methods on instances of type T.
MembersInjectorLookup<T>	A lookup of the members injector for a type.
MemoryIndex	High-performance single-document main memory Apache Lucene fulltext search index.
MemoryIndexOffsetStrategy	Uses an Analyzer on content to get offsets and then populates a MemoryIndex.
MemorySizeValue	Utility methods to get memory sizes.
MergedIterator<T extends Comparable<T>>	Provides a merged sorted view from several sorted iterators.
MergeInfo	A MergeInfo provides information required for a MERGE context.
MergePolicy	Expert: a MergePolicy determines the sequence of primitive merge operations.
MergePolicy.MergeAbortedException	Thrown when a merge was explicitly aborted because IndexWriter.abortMerges() was called.
MergePolicy.MergeContext	This interface represents the current context of the merge selection process.
MergePolicy.MergeException	Exception thrown if there are any problems while executing a merge.
MergePolicy.MergeSpecification	A MergeSpecification instance provides the information necessary to perform multiple merges.
MergePolicy.OneMerge	OneMerge provides the information necessary to perform an individual primitive merge operation, resulting in a single new segment.
MergePolicy.OneMergeProgress	Progress and state for an executing merge.
MergePolicy.OneMergeProgress.PauseReason	Reason for pausing the merge thread.
MergePolicyConfig	A shard in elasticsearch is a Lucene index, and a Lucene index is broken down into segments.
MergeRateLimiter	This is the RateLimiter that IndexWriter assigns to each running merge, to give MergeSchedulers ionice like control.
MergeScheduler	Expert: IndexWriter uses an instance implementing this interface to execute the merges selected by a MergePolicy.
MergeSchedulerConfig	The merge scheduler (ConcurrentMergeScheduler) controls the execution of merge operations once they are needed (according to the merge policy).
MergeState	Holds common state used during segment merging.
MergeState.DocMap	A map of doc IDs.
MergeStats
MergeTrigger	MergeTrigger is passed to MergePolicy.findMerges(MergeTrigger, SegmentInfos, MergePolicy.MergeContext) to indicate the event that triggered the merge.
MergingBucketsDeferringCollector	A specialization of BestBucketsDeferringCollector that collects all matches and then is able to replay a given subset of buckets.
MergingDigest	Maintains a t-digest by collecting new points in a buffer that is then sorted occasionally and merged into a sorted array that contains previously computed centroids.
MergingDigest.Encoding
Message	An error message and the context in which it occurred.
MessageDigests	This MessageDigests class provides convenience methods for obtaining thread local MessageDigest instances for MD5, SHA-1, and SHA-256 message digests.
MetaData
MetaData.Builder
MetaData.Custom
MetaData.UnknownGatewayOnlyCustom
MetaData.XContentContext
MetaDataCreateIndexService	Service responsible for submitting create index requests
MetaDataDeleteIndexService	Deletes indices.
MetadataFieldMapper	A mapper for a builtin field containing metadata about a document.
MetadataFieldMapper.Builder<T extends MetadataFieldMapper.Builder,Y extends MetadataFieldMapper>
MetadataFieldMapper.TypeParser
MetaDataIndexAliasesService	Service responsible for submitting add and remove aliases requests
MetaDataIndexStateService	Service responsible for submitting open/close index requests
MetaDataIndexTemplateService	Service responsible for submitting index templates updates
MetaDataIndexTemplateService.PutListener
MetaDataIndexTemplateService.PutRequest
MetaDataIndexTemplateService.PutResponse
MetaDataIndexTemplateService.RemoveListener
MetaDataIndexTemplateService.RemoveRequest
MetaDataIndexTemplateService.RemoveResponse
MetaDataIndexUpgradeService	This service is responsible for upgrading legacy index metadata to the current version
MetaDataMappingService	Service responsible for submitting mapping changes
MetaDataStateFormat<T>	MetaDataStateFormat is a base class to write checksummed XContent based files to one or more directories in a standardized directory structure.
MetaDataUpdateSettingsService	Service responsible for submitting update index settings requests
MetaDataUpgrader	Upgrades MetaData on startup on behalf of installed Plugins
MetaStateService	Handles writing and loading Manifest, MetaData and IndexMetaData
Metric
MetricConfig	The configuration object for the metrics portion of a rollup job config { "metrics": [ { "field": "foo", "metrics": [ "min", "max", "sum"] }, { "field": "bar", "metrics": [ "max" ] } ] }
MetricDetail	Details about a specific EvaluationMetric that should be included in the resonse.
MetricsAggregator
MigrationClient	A wrapper for the RestHighLevelClient that provides methods for accessing the Elastic License-related methods
Min	An aggregation that computes the minimum of the values in the current bucket.
MinAggregationBuilder
MinBucketPipelineAggregationBuilder
MinBucketPipelineAggregator
MinDocQuery	A Query that only matches documents that are greater than or equal to a configured doc ID.
MinimalEdgeRing	A ring of Edges with the property that no node has degree greater than 2.
MinimizationOperations	Operations for minimizing automata.
MinimumScoreCollector
Missing	A missing aggregation.
MissingAggregationBuilder
MissingAggregator
MissingAggregatorFactory
MissingHistoryOperationsException	Exception indicating that not all requested operations from LuceneChangesSnapshot are available.
MissingValues	Utility class that allows to return views of ValuesSources that replace the missing value with a configured value.
MlFilter	An MlFilter Object A filter contains a list of strings.
MlFilter.Builder
MlInfoRequest
MlInfoResponse
MMapDirectory	File-based Directory implementation that uses mmap for reading, and FSDirectory.FSIndexOutput for writing.
ModelPlotConfig
ModelSizeStats	Provide access to the C++ model memory usage numbers for the Java process.
ModelSizeStats.Builder
ModelSizeStats.MemoryStatus	The status of the memory monitored by the ResourceMonitor.
ModelSnapshot	ModelSnapshot Result POJO
ModelSnapshot.Builder
Module	A module contributes configuration information, typically interface bindings, which will be used to create an Injector.
Modules	Static utility methods for creating and working with instances of Module.
Modules.OverriddenModuleBuilder	See the EDSL example at override().
ModulesBuilder
MonitorService
MonotoneChain
MonotoneChain	Monotone Chains are a way of partitioning the segments of a linestring to allow for fast searching of intersections.
MonotoneChainBuilder	Constructs MonotoneChains for sequences of Coordinates.
MonotoneChainEdge	MonotoneChains are a way of partitioning the segments of an edge to allow for fast searching of intersections.
MonotoneChainIndexer	MonotoneChains are a way of partitioning the segments of an edge to allow for fast searching of intersections.
MonotoneChainOverlapAction	The action for the internal iterator for performing overlap queries on a MonotoneChain
MonotoneChainSelectAction	The action for the internal iterator for performing envelope select queries on a MonotoneChain
MonotonicBlockPackedReader	Provides random access to a stream written with MonotonicBlockPackedWriter.
MoreLikeThisQuery
MoreLikeThisQueryBuilder	A more like this query that finds documents that are "like" the provided set of document(s).
MoreLikeThisQueryBuilder.Item	A single item to be used for a MoreLikeThisQueryBuilder.
MoreTypes	Static methods for working with types that we aren't publishing in the public Types API.
MoreTypes.GenericArrayTypeImpl
MoreTypes.MemberImpl	We cannot serialize the built-in Java member classes, which prevents us from using Members in our exception types.
MoreTypes.ParameterizedTypeImpl
MoreTypes.WildcardTypeImpl	The WildcardType interface supports multiple upper bounds and multiple lower bounds.
MovAvgModel
MovAvgModel.AbstractModelParser	Abstract class which also provides some concrete parsing functionality.
MovAvgModelBuilder	Represents the common interface that all moving average models share.
MovAvgPipelineAggregationBuilder
MovAvgPipelineAggregator
MoveAllocationCommand	A command that moves a shard from a specific node to another node. Note: The shard needs to be in the state ShardRoutingState.STARTED in order to be moved.
MoveDecision	Represents a decision to move a started shard, either because it is no longer allowed to remain on its current node or because moving it to another node will form a better cluster balance.
MovFnPipelineAggregationBuilder
MovFnPipelineAggregator	This pipeline aggregation gives the user the ability to script functions that "move" across a window of data, instead of single data points.
MovingFunctions	Provides a collection of static utility methods that can be referenced from MovingFunction script contexts
MovingFunctionScript	This class provides a custom script context for the Moving Function pipeline aggregation, so that we can expose a number of pre-baked moving functions like min, max, movavg, etc
MovingFunctionScript.Factory
MSBRadixSorter	Radix sorter for variable-length strings.
Multibinder<T>	An API to bind multiple values separately, only to later inject them as a complete collection.
Multibinder.RealMultibinder<T>	The actual multibinder plays several roles:
MultiBucketAggregationBuilder	Marker interface to indicate that the AggregationBuilder is for a multi-bucket aggregation.
MultiBucketCollector	A BucketCollector which allows running a bucket collection with several BucketCollectors.
MultiBucketConsumerService	An aggregation service that creates instances of MultiBucketConsumerService.MultiBucketConsumer.
MultiBucketConsumerService.MultiBucketConsumer	An IntConsumer that throws a MultiBucketConsumerService.TooManyBucketsException when the sum of the provided values is above the limit (`search.max_buckets`).
MultiBucketConsumerService.TooManyBucketsException
MultiBucketsAggregation	An aggregation that returns multiple buckets
MultiBucketsAggregation.Bucket	A bucket represents a criteria to which all documents that fall in it adhere to.
MultiCandidateGeneratorWrapper
MultiCollector	A Collector which allows running a search with several Collectors.
MultiFields	Provides a single Fields term index view over an IndexReader.
MultiFileWriter
MultiGeoPointValues	A stateful lightweight per document set of GeoPoint values.
MultiGetAction
MultiGetItemResponse	A single multi get response.
MultiGetRequest
MultiGetRequest.Item	A single get item.
MultiGetRequestBuilder	A multi get document action request builder.
MultiGetResponse
MultiGetResponse.Failure	Represents a failure.
MultiGetShardRequest
MultiGetShardResponse
MultiLevelSkipListReader	This abstract class reads skip lists with multiple levels.
MultiLevelSkipListWriter	This abstract class writes skip lists with multiple levels.
MultiLine	Represents a MultiLine geometry object on the earth's surface.
MultiLineString	Models a collection of LineStrings.
MultiLineStringBuilder
MultiMatchQuery
MultiMatchQueryBuilder	Same as MatchQueryBuilder but supports multiple fields.
MultiMatchQueryBuilder.Type
MultiOrdinals	Ordinals implementation which is efficient at storing field data ordinals for multi-valued or sparse fields.
MultiPhrasePrefixQuery
MultiPhraseQuery	A generalized version of PhraseQuery, with the possibility of adding more than one term at the same position that are treated as a disjunction (OR).
MultiPhraseQuery.Builder	A builder for multi-phrase queries
MultiPoint	Represents a MultiPoint object on the earth's surface in decimal degrees and optional altitude in meters.
MultiPoint	Models a collection of Points.
MultiPointBuilder
MultiPolygon	Collection of polygons
MultiPolygon	Models a collection of Polygons.
MultiPolygonBuilder
MultiPostingsEnum	Exposes PostingsEnum, merged from PostingsEnum API of sub-segments.
MultiPostingsEnum.EnumWithSlice	Holds a PostingsEnum along with the corresponding ReaderSlice.
MultiReader	A CompositeReader which reads multiple indexes, appending their content.
MultiSearchAction
MultiSearchRequest	A multi search API request.
MultiSearchRequestBuilder	A request builder for multiple search requests.
MultiSearchResponse	A multi search response.
MultiSearchResponse.Item	A search response item, holding the actual search response, or an error message if it failed.
MultiSearchTemplateRequest
MultiSearchTemplateResponse
MultiSearchTemplateResponse.Item	A search template response item, holding the actual search template response, or an error message if it failed.
MultiSimilarity	Implements the CombSUM method for combining evidence from multiple similarity values described in: Joseph A.
MultiTermQuery	An abstract Query that matches documents containing a subset of terms provided by a FilteredTermsEnum enumeration.
MultiTermQuery.RewriteMethod	Abstract class that defines how the query is rewritten.
MultiTermQuery.TopTermsBlendedFreqScoringRewrite	A rewrite method that first translates each term into BooleanClause.Occur.SHOULD clause in a BooleanQuery, but adjusts the frequencies used for scoring to be blended across the terms, otherwise the rarest term typically ranks highest (often not useful eg in the set of expanded terms in a FuzzyQuery).
MultiTermQuery.TopTermsBoostOnlyBooleanQueryRewrite	A rewrite method that first translates each term into BooleanClause.Occur.SHOULD clause in a BooleanQuery, but the scores are only computed as the boost.
MultiTermQuery.TopTermsScoringBooleanQueryRewrite	A rewrite method that first translates each term into BooleanClause.Occur.SHOULD clause in a BooleanQuery, and keeps the scores as computed by the query.
MultiTermQueryBuilder
MultiTerms	Exposes flex API, merged from flex API of sub-segments.
MultiTermsEnum	Exposes TermsEnum API, merged from TermsEnum API of sub-segments.
MultiTermVectorsAction
MultiTermVectorsItemResponse	A single multi get response.
MultiTermVectorsRequest
MultiTermVectorsRequest
MultiTermVectorsRequestBuilder
MultiTermVectorsResponse
MultiTermVectorsResponse
MultiTermVectorsResponse.Failure	Represents a failure.
MultiTermVectorsShardRequest
MultiTermVectorsShardResponse
MultiValueMode	Defines what values to pick in the case a document contains multiple values for a particular field.
MultiValuesSource<VS extends ValuesSource>	Class to encapsulate a set of ValuesSource objects labeled by field name
MultiValuesSource.NumericMultiValuesSource
MultiValuesSourceAggregationBuilder<VS extends ValuesSource,AB extends MultiValuesSourceAggregationBuilder<VS,AB>>	Similar to ValuesSourceAggregationBuilder, except it references multiple ValuesSources (e.g.
MultiValuesSourceAggregationBuilder.LeafOnly<VS extends ValuesSource,AB extends MultiValuesSourceAggregationBuilder<VS,AB>>
MultiValuesSourceAggregatorFactory<VS extends ValuesSource>
MultiValuesSourceFieldConfig
MultiValuesSourceFieldConfig.Builder
MultiValuesSourceParseHelper
Murmur3HashFunction	Hash function based on the Murmur3 algorithm, which is the default as of Elasticsearch 2.0.
MurmurHash3	MurmurHash3 hashing functions.
MurmurHash3.Hash128	A 128-bits hash.
MutableInteger	Like an Integer, but mutable :) Sometimes it is just really convenient to be able to pass a MutableInteger as a parameter to a function, or for synchronization purposes (so that you can guard access to an int value without creating a separate Object just to synchronize on).
MutablePointsReaderUtils	Utility APIs for sorting and partitioning buffered points.
MutablePointValues	PointValues whose order of points can be changed.
MutableValue	Base class for all mutable values.
MutableValueInt	MutableValue implementation of type int.
MutualInformation
MutualInformation.MutualInformationBuilder
NamedAnalyzer	Named analyzer is an analyzer wrapper around an actual analyzer (NamedAnalyzer.analyzer that is associated with a name (NamedAnalyzer.name().
NamedDiff<T extends Diffable<T>>	Diff that also support NamedWriteable interface
NamedDiffable<T>	Diff that also support VersionedNamedWriteable interface
NamedDiffableValueSerializer<T extends NamedDiffable<T>>	Value Serializer for named diffables
NamedObjectNotFoundException	Thrown when NamedXContentRegistry cannot locate a named object to parse for a particular name
NamedPolicy
NamedRegistry<T>	A registry from String to some class implementation.
NamedSPILoader<S extends NamedSPILoader.NamedSPI>	Helper class for loading named SPIs from classpath (e.g.
NamedSPILoader.NamedSPI	Interface to support NamedSPILoader.lookup(String) by name.
NamedWriteable	A Writeable object identified by its name.
NamedWriteableAwareStreamInput	Wraps a StreamInput and associates it with a NamedWriteableRegistry
NamedWriteableRegistry	A registry for Writeable.Reader readers of NamedWriteable.
NamedWriteableRegistry.Entry	An entry in the registry, made up of a category class and name, and a reader for that category class.
NamedXContentProvider	Provides named XContent parsers.
NamedXContentRegistry
NamedXContentRegistry.Entry	An entry in the NamedXContentRegistry containing the name of the object and the parser that can parse it.
NameOrDefinition
NativeFSLockFactory	Implements LockFactory using native OS file locks.
NearSpansOrdered	A Spans that is formed from the ordered subspans of a SpanNearQuery where the subspans do not overlap and have a maximum slop between them.
NearSpansUnordered	Similar to NearSpansOrdered, but for the unordered case.
Nested	A nested aggregation.
NestedAggregationBuilder
NestedAggregator
NestedAggregatorFactory
NestedHelper	Utility class to filter parent and children clauses when building nested queries.
NestedQueryBuilder
NestedScope	During query parsing this keeps track of the current nested level.
NestedSortBuilder
NetworkAddress	Utility functions for presentation of network addresses.
NetworkExceptionHelper
NetworkMessage	Represents a transport message sent over the network.
NetworkModule	A module to handle registering and binding all network related classes.
NetworkPlugin	Plugin for extending network and transport related classes
NetworkService
NetworkService.CustomNameResolver	A custom name resolver can support custom lookup keys (my_net_key:ipv4) and also change the default inet address used in case no settings is provided.
NetworkUtils	Utilities for network interfaces / addresses binding and publishing.
NGramDistance	N-Gram version of edit distance based on paper by Grzegorz Kondrak, "N-gram similarity and distance".
NIOFSDirectory	An FSDirectory implementation that uses java.nio's FileChannel's positional read, which allows multiple threads to read from the same file without synchronizing.
NoClassSettingsException	A specific type of SettingsException indicating failure to load a class based on a settings value.
NodableSegmentString	An interface for classes which support adding nodes to a segment string.
Node	Metadata about an HttpHost running Elasticsearch.
Node	A node represent a node within a cluster (cluster.name).
Node
Node	A node in a PlanarGraphis a location where 0 or more Edges meet.
Node.Roles	Role information about an Elasticsearch process.
NodeAllocationResult	This class represents the shard allocation decision and its explanation for a single node.
NodeAllocationResult.ShardStoreInfo	A class that captures metadata about a shard store on a node.
NodeAndClusterIdConverter	Pattern converter to format the node_and_cluster_id variable into JSON fields node.id and cluster.uuid.
NodeAndClusterIdStateListener	The NodeAndClusterIdStateListener listens to cluster state changes and ONLY when receives the first update it sets the clusterUUID and nodeID in log4j pattern converter NodeAndClusterIdConverter.
NodeAttributes	A Pojo class containing an Elastic Node's attributes
NodeAttributes	A Pojo class containing an Elastic Node's attributes
NodeClient	Client that executes actions on the local node.
NodeClosedException	An exception indicating that node is closed.
NodeConnectionsService	This component is responsible for maintaining connections from this node to all the nodes listed in the cluster state, and for disconnecting from nodes once they are removed from the cluster state.
NodeDisconnectedException
NodedSegmentString	Represents a list of contiguous line segments, and supports noding the segments.
NodeEnvironment	A component that holds all data paths for a single node.
NodeEnvironment.NodeLock
NodeEnvironment.NodePath
NodeEnvironment.ShardLocker	A functional interface that people can use to reference NodeEnvironment.shardLock(ShardId, String, long)
NodeFactory
NodeHotThreads
NodeIndicesStats	Global information on indices stats running on a specific node.
NodeInfo	Node information (static, does not change over time).
NodeJoinController	This class processes incoming join request (passed zia ZenDiscovery).
NodeJoinController.ElectionCallback
NodeMap	A map of nodes, indexed by the coordinate of the node
NodeMap	A map of Nodes, indexed by the coordinate of the node.
NodeMappingRefreshAction
NodeMappingRefreshAction.NodeMappingRefreshRequest
NodeMetaData	Metadata associated with this node: its persistent node ID and its version.
NodeNamePatternConverter	Converts %node_name in log4j patterns into the current node name.
NodeNotConnectedException	An exception indicating that a message is sent to a node that is not connected.
NodePersistentTasksExecutor	This component is responsible for execution of persistent tasks.
Noder	Computes all intersections between segments in a set of SegmentStrings.
NodeRemovalClusterStateTaskExecutor
NodeRemovalClusterStateTaskExecutor.Task
NodeSelector	Selects nodes that can receive requests.
NodeService
NodesFaultDetection	A fault detection of multiple nodes.
NodesFaultDetection.Listener
NodesFaultDetection.PingRequest
NodesFaultDetection.PingResponse
NodesHotThreadsAction
NodesHotThreadsRequest
NodesHotThreadsRequestBuilder
NodesHotThreadsResponse
NodeShouldNotConnectException
NodesInfoAction
NodesInfoRequest	A request to get node (cluster) level information.
NodesInfoRequestBuilder
NodesInfoResponse
NodesOperationRequestBuilder<Request extends BaseNodesRequest<Request>,Response extends BaseNodesResponse,RequestBuilder extends NodesOperationRequestBuilder<Request,Response,RequestBuilder>>
NodesReloadSecureSettingsAction
NodesReloadSecureSettingsRequest	Request for a reload secure settings action.
NodesReloadSecureSettingsRequestBuilder	Builder for the reload secure settings nodes request
NodesReloadSecureSettingsResponse	The response for the reload secure settings action
NodesReloadSecureSettingsResponse.NodeResponse
NodesResponse	Base class for responses that are node responses.
NodesResponseHeader	A utility class to parse the Nodes Header returned by RestActions.buildNodesHeader(XContentBuilder, ToXContent.Params, BaseNodesResponse).
NodesStatsAction
NodesStatsRequest	A request to get node (cluster) level stats.
NodesStatsRequestBuilder
NodesStatsResponse
NodeStats	Node statistics (dynamic, changes depending on when created).
NodesUsageAction
NodesUsageRequest
NodesUsageRequestBuilder
NodesUsageResponse	The response for the nodes usage api which contains the individual usage statistics for all nodes queried.
NodeUsage
NodeValidationException	An exception thrown during node validation.
NodeVersionAllocationDecider	An allocation decider that prevents relocation or allocation from nodes that might not be version compatible.
NodingIntersectionFinder	Finds non-noded intersections in a set of SegmentStrings, if any exist.
NodingValidator	Validates that a collection of SegmentStrings is correctly noded.
NoLockFactory	Use this LockFactory to disable locking entirely.
NoMasterBlockService
NoMergePolicy	A MergePolicy which never returns merges to execute.
NonCollectingAggregator	An aggregator that is not collected, this can typically be used when running an aggregation over a field that doesn't have a mapping.
NoneCircuitBreakerService	Class that returns a breaker that never breaks
NoneRecycler<T>
NoneRecycler.NV<T>
NoninvertibleTransformationException	Indicates that an AffineTransformation is non-invertible.
NonNegativeScoresSimilarity	A Similarity that rejects negative scores.
Nonnull
Nonnull.Checker
NoNodeAvailableException	An exception indicating no node is available to perform the operation.
NoopCircuitBreaker	A CircuitBreaker that doesn't increment or adjust, and all operations are basically noops
NoOpEngine	NoOpEngine is an engine implementation that does nothing but the bare minimum required in order to have an engine.
NoOpOffsetStrategy	Never returns offsets.
Normalization	This class acts as the base class for the implementations of the term frequency normalization methods in the DFR framework.
Normalization.NoNormalization	Implementation used when there is no normalization.
NormalizationH1	Normalization model that assumes a uniform distribution of the term frequency.
NormalizationH2	Normalization model in which the term frequency is inversely related to the length.
NormalizationH3	Dirichlet Priors normalization
NormalizationZ	Pareto-Zipf Normalization
NormalizingCharFilterFactory	A CharFilterFactory that also supports normalization The default implementation of NormalizingCharFilterFactory.normalize(Reader) delegates to CharFilterFactory.create(Reader)
NormalizingTokenFilterFactory	A TokenFilterFactory that may be used for normalization The default implementation delegates NormalizingTokenFilterFactory.normalize(TokenStream) to TokenFilterFactory.create(TokenStream)}.
NormsConsumer	Abstract API that consumes normalization values.
NormsFieldExistsQuery	A Query that matches documents that have a value for a given field as reported by field norms.
NormsFormat	Encodes/decodes per-document score normalization values.
NormsProducer	Abstract API that produces field normalization values
NoShardAvailableActionException
NoSuchNodeException
NoSuchRemoteClusterException	An exception that remote cluster is missing or connectivity to the remote connection is failing
NotCompressedException	Exception indicating that we were expecting something compressed, which was not compressed or corrupted so that the compression format could not be detected.
NotDocIdSet	This DocIdSet encodes the negation of another DocIdSet.
NotifyOnceListener<Response>	A listener that ensures that only one of onResponse or onFailure is called.
NotMasterException	Thrown when a node join request or a master ping reaches a node which is not currently acting as a master or when a cluster state update task is to be executed on a node that is no longer master.
NotRepresentableException	Indicates that a HCoordinate has been computed which is not representable on the Cartesian plane.
NotSerializableExceptionWrapper	This exception can be used to wrap a given, not serializable exception to serialize via StreamOutput.writeException(Throwable).
NotSerializableTransportException
NotXContentException	Exception indicating that we were expecting some XContent but could not detect its type.
NRTSuggester	NRTSuggester executes Top N search on a weighted FST specified by a CompletionScorer
Nullability	Whether a member supports null values injected.
Nullable	The presence of this annotation on a method parameter indicates that null is an acceptable value for that parameter.
NullFragmenter	Fragmenter implementation which does not fragment the text.
NumberFieldMapper	A FieldMapper for numeric types: byte, short, int, long, float and double.
NumberFieldMapper.Builder
NumberFieldMapper.Defaults
NumberFieldMapper.NumberFieldType
NumberFieldMapper.NumberType
NumberFieldMapper.TypeParser
Numbers	A set of utilities for numbers.
NumberSortScript
NumberSortScript.Factory	A factory to construct stateful NumberSortScript factories for a specific index.
NumberSortScript.LeafFactory	A factory to construct NumberSortScript instances.
NumberUtil
NumericDocValues	A per-document numeric value.
NumericDocValuesField	Field that stores a per-document long value for scoring, sorting or value retrieval.
NumericDoubleValues	A per-document numeric value.
NumericMetricsAggregation
NumericMetricsAggregation.MultiValue
NumericMetricsAggregation.SingleValue
NumericMetricsAggregator
NumericMetricsAggregator.MultiValue
NumericMetricsAggregator.SingleValue
NumericUtils	Helper APIs to encode numeric values as sortable bytes and vice-versa.
NXYSignificanceHeuristic
NXYSignificanceHeuristic.Frequencies
NXYSignificanceHeuristic.NXYBuilder
NXYSignificanceHeuristic.NXYParser
ObjectArray<T>	Abstraction of an array of object values.
ObjectArrayList<KType>	An array-backed list of Objects.
ObjectBuilder
ObjectCollection<KType>	A collection allows basic, efficient operations on sets of elements (difference and intersection).
ObjectContainer<KType>	A generic container holding Objects.
ObjectCursor<KType>	A cursor over a collection of Objects.
ObjectFloatAssociativeContainer<KType>	An associative container from keys to (one or possibly more) values.
ObjectFloatCursor<KType>	A cursor over entries of an associative container (Object keys and float values).
ObjectFloatHashMap<KType>	A hash map of Object to float, implemented using open addressing with linear probing for collision resolution.
ObjectFloatMap<KType>	An associative container with unique binding from keys to a single value.
ObjectFloatPredicate<KType>	A predicate that applies to Object, float pairs.
ObjectFloatProcedure<KType>	A procedure that applies to Object, float pairs.
ObjectHashSet<KType>	A hash set of Objects, implemented using using open addressing with linear probing for collision resolution.
ObjectIndexedContainer<KType>	An indexed container provides random access to elements based on an index.
ObjectIntAssociativeContainer<KType>	An associative container from keys to (one or possibly more) values.
ObjectIntCursor<KType>	A cursor over entries of an associative container (Object keys and int values).
ObjectIntHashMap<KType>	A hash map of Object to int, implemented using open addressing with linear probing for collision resolution.
ObjectIntMap<KType>	An associative container with unique binding from keys to a single value.
ObjectIntPredicate<KType>	A predicate that applies to Object, int pairs.
ObjectIntProcedure<KType>	A procedure that applies to Object, int pairs.
ObjectIntScatterMap<KType>	Same as ObjectIntHashMap but does not implement per-instance key mixing strategy and uses a simpler (faster) bit distribution function.
ObjectLongAssociativeContainer<KType>	An associative container from keys to (one or possibly more) values.
ObjectLongCursor<KType>	A cursor over entries of an associative container (Object keys and long values).
ObjectLongHashMap<KType>	A hash map of Object to long, implemented using open addressing with linear probing for collision resolution.
ObjectLongMap<KType>	An associative container with unique binding from keys to a single value.
ObjectLongPredicate<KType>	A predicate that applies to Object, long pairs.
ObjectLongProcedure<KType>	A procedure that applies to Object, long pairs.
ObjectLookupContainer<KType>	Marker interface for containers that can check if they contain a given object in at least time O(log n) and ideally in amortized constant time O(1).
ObjectMapper
ObjectMapper.Builder<T extends ObjectMapper.Builder,Y extends ObjectMapper>
ObjectMapper.Defaults
ObjectMapper.Dynamic
ObjectMapper.Nested
ObjectMapper.TypeParser
ObjectObjectAssociativeContainer<KType,VType>	An associative container from keys to (one or possibly more) values.
ObjectObjectCursor<KType,VType>	A cursor over entries of an associative container (Object keys and Object values).
ObjectObjectHashMap<KType,VType>	A hash map of Object to Object, implemented using open addressing with linear probing for collision resolution.
ObjectObjectMap<KType,VType>	An associative container with unique binding from keys to a single value.
ObjectObjectPredicate<KType,VType>	A predicate that applies to Object, Object pairs.
ObjectObjectProcedure<KType,VType>	A procedure that applies to Object, Object pairs.
ObjectParser<Value,Context>	A declarative, stateless parser that turns XContent into setter calls.
ObjectParser.NamedObjectParser<T,Context>	Functional interface for instantiating and parsing named objects.
ObjectParser.Parser<Value,Context>
ObjectParser.UnknownFieldConsumer<Value>	Defines how to consume a parsed undefined field
ObjectParser.ValueType
ObjectParserHelper<Value,Context>	This class provides helpers for ObjectParser that allow dealing with classes outside of the xcontent dependencies.
ObjectPredicate<KType>	A predicate that applies to Object objects.
ObjectProcedure<KType>	A procedure that applies to Object objects.
ObjectSet<KType>	A set of Objects.
Octant	Methods for computing and working with octants of the Cartesian plane Octants are numbered as follows:
OffHeapFSTStore	Provides off heap storage of finite state machine (FST), using underlying index input instead of byte store on heap
OfflinePointReader	Reads points from disk in a fixed-with format, previously written with OfflinePointWriter.
OfflinePointWriter	Writes points to disk in a fixed-with format.
OfflineSorter	On-disk sorting of byte arrays.
OfflineSorter.BufferSize	A bit more descriptive unit for constructors.
OfflineSorter.ByteSequencesReader	Utility class to read length-prefixed byte[] entries from an input.
OfflineSorter.ByteSequencesWriter	Utility class to emit length-prefixed byte[] entries to an output stream for sorting.
OffsetAttribute	The start and end character offset of a Token.
OffsetCurveBuilder	Computes the raw offset curve for a single Geometry component (ring, line or point).
OffsetCurveSetBuilder	Creates all the raw offset curves for a buffer of a Geometry.
OffsetLimitTokenFilter	This TokenFilter limits the number of tokens while indexing by adding up the current offset.
OffsetsEnum	An enumeration/iterator of a term and its offsets for use by FieldHighlighter.
OffsetsEnum.MultiOffsetsEnum	A view over several OffsetsEnum instances, merging them in-place
OffsetsEnum.OfMatchesIterator	Based on a MatchesIterator; does not look at submatches.
OffsetsEnum.OfMatchesIteratorWithSubs	Based on a MatchesIterator with submatches.
OffsetsEnum.OfPostings	Based on a PostingsEnum -- the typical/standard OE impl.
OneMergeHelper	Allows pkg private access
OneMergeWrappingMergePolicy	A wrapping merge policy that wraps the MergePolicy.OneMerge objects returned by the wrapped merge policy.
OnePointsBuilder	INTERNAL class used by some ShapeReaders.
OnGoingMerge	Represents a single on going merge within an index.
OnHeapFSTStore	Provides storage of finite state machine (FST), using byte array or byte store allocated on heap.
OpenIndexAction
OpenIndexClusterStateUpdateRequest	Cluster state update request that allows to open one or more indices
OpenIndexClusterStateUpdateResponse	A cluster state update response with specific fields for index opening.
OpenIndexRequest	A request to open an index.
OpenIndexRequestBuilder	Builder for for open index request
OpenIndexResponse	A response for a open index action.
OpenJobRequest	Request to open a Machine Learning Job
OpenJobResponse	Response indicating if the Machine Learning Job is now opened or not
OperationMode	Enum representing the different modes that Index Lifecycle Service can operate in.
OperationRouting
Operations	Automata operations.
Operator	Enum representing logical comparisons on doubles
Operator
OrdinalMap	Maps per-segment ordinals to/from global ordinal space, using a compact packed-ints representation.
Ordinals	A thread safe ordinals abstraction.
Ordinals.ValuesHolder
OrdinalsBuilder	Simple class to build document ID <-> ordinal mapping.
Ordinate	An enumeration of possible Well-Known-Text or Well-Known-Binary ordinates.
OrdTermState	An ordinal based TermState
Orientation	Functions to compute the orientation of basic geometric structures including point triplets (triangles) and rings.
OrientedCoordinateArray	Allows comparing Coordinate arrays in an orientation-independent way.
OriginalIndices	Used to keep track of original indices within internal (e.g.
OriginSettingClient	A Client that sends requests with the origin set to a particular value and calls its ActionListener in its original ThreadContext.
OsInfo
OsProbe	The OsProbe class retrieves information about the physical and swap size of the machine memory, as well as the system load average and cpu load.
OsService
OsStats
OsStats.Cgroup	Encapsulates basic cgroup statistics.
OsStats.Cgroup.CpuStat	Encapsulates CPU time statistics.
OsStats.Cpu
OsStats.Mem
OsStats.Swap
Outputs<T>	Represents the outputs for an FST, providing the basic algebra required for building and traversing the FST.
OutputStreamDataOutput	A DataOutput wrapping a plain OutputStream.
OutputStreamIndexOutput	Implementation class for buffered IndexOutput that writes to an OutputStream.
OutputStreamOutStream	An adapter to allow an OutputStream to be used as an OutStream
OutputStreamStreamOutput
OutStream	A interface for classes providing an output stream of bytes.
OverallBucket	Overall Bucket Result POJO
OverallBucket.JobInfo
OverlayNodeFactory	Creates nodes for use in the PlanarGraphs constructed during overlay operations.
OverlayOp	Computes the geometric overlay of two Geometrys.
OverlaySingleDocTermsLeafReader	Overlays a 2nd LeafReader for the terms of one field, otherwise the primary reader is consulted.
PackedCoordinateSequence	A CoordinateSequence implementation based on a packed arrays.
PackedCoordinateSequence.Double	Packed coordinate sequence implementation based on doubles
PackedCoordinateSequence.Float	Packed coordinate sequence implementation based on floats
PackedCoordinateSequenceFactory	Builds packed array coordinate sequences.
PackedInts	Simplistic compression for array of unsigned long values.
PackedInts.Decoder	A decoder for packed integers.
PackedInts.Encoder	An encoder for packed integers.
PackedInts.Format	A format to write packed ints.
PackedInts.FormatAndBits	Simple class that holds a format and a number of bits per value.
PackedInts.Mutable	A packed integer array that can be modified.
PackedInts.NullReader	A PackedInts.Reader which has all its values equal to 0 (bitsPerValue = 0).
PackedInts.Reader	A read-only random access array of positive integers.
PackedInts.ReaderIterator	Run-once iterator interface, to decode previously saved PackedInts.
PackedInts.Writer	A write-once Writer.
PackedLongValues	Utility class to compress integers into a LongValues instance.
PackedLongValues.Builder	A Builder for a PackedLongValues instance.
PackedQuadPrefixTree	Uses a compact binary representation of 8 bytes to encode a spatial quad trie.
PackedQuadPrefixTree.Factory	Factory for creating PackedQuadPrefixTree instances with useful defaults.
PackedTokenAttributeImpl	Default implementation of the common attributes used by Lucene: CharTermAttribute TypeAttribute PositionIncrementAttribute PositionLengthAttribute OffsetAttribute TermFrequencyAttribute
PageCacheRecycler	A recycler of fixed-size pages.
PageCacheRecycler.Type
PagedBytes	Represents a logical byte[] as a series of pages.
PagedBytes.Reader	Provides methods to read BytesRefs from a frozen PagedBytes.
PagedBytesAtomicFieldData
PagedBytesIndexFieldData
PagedBytesIndexFieldData.Builder
PagedBytesReference	A page based bytes reference, internally holding the bytes in a paged data structure.
PagedGrowableWriter	A PagedGrowableWriter.
PagedMutable	A PagedMutable.
PageParams	Paging parameters for GET requests
PairOutputs<A,B>	An FST Outputs implementation, holding two other outputs.
PairOutputs.Pair<A,B>	Holds a single pair of two outputs.
ParentChildrenBlockJoinQuery	A query that returns all the matching child documents for a specific parent document indexed together in the same block.
ParseContext
ParseContext.Document	Fork of Document with additional functionality.
ParseContext.InternalParseContext
ParsedAdjacencyMatrix
ParsedAdjacencyMatrix.ParsedBucket
ParsedAggregation	An implementation of Aggregation that is parsed from a REST response.
ParsedAutoDateHistogram
ParsedAutoDateHistogram.ParsedBucket
ParsedAvg
ParsedBinaryRange
ParsedBinaryRange.ParsedBucket
ParsedBucketMetricValue
ParsedCardinality
ParsedComposite
ParsedComposite.ParsedBucket
ParsedDateHistogram
ParsedDateHistogram.ParsedBucket
ParsedDateRange
ParsedDateRange.ParsedBucket
ParsedDerivative
ParsedDocument	The result of parsing a document.
ParsedDoubleTerms
ParsedDoubleTerms.ParsedBucket
ParsedExtendedStats
ParsedExtendedStatsBucket
ParsedFilter
ParsedFilters
ParsedFilters.ParsedBucket
ParsedGeoBounds
ParsedGeoCentroid	Serialization and merge logic for GeoCentroidAggregator.
ParsedGeoDistance
ParsedGeoDistance.ParsedBucket
ParsedGeoGrid
ParsedGeoGridBucket
ParsedGeoHashGrid
ParsedGeoHashGridBucket
ParsedGeoTileGrid
ParsedGeoTileGridBucket
ParsedGlobal
ParsedHDRPercentileRanks
ParsedHDRPercentiles
ParsedHistogram
ParsedLongTerms
ParsedLongTerms.ParsedBucket
ParsedMax
ParsedMedianAbsoluteDeviation
ParsedMin
ParsedMissing
ParsedMultiBucketAggregation<B extends MultiBucketsAggregation.Bucket>
ParsedMultiBucketAggregation.ParsedBucket
ParsedNested
ParsedPercentiles
ParsedPercentilesBucket
ParsedQuery	The result of parsing a query.
ParsedRange
ParsedRange.ParsedBucket
ParsedReverseNested
ParsedSampler
ParsedScriptedMetric
ParsedSignificantLongTerms
ParsedSignificantLongTerms.ParsedBucket
ParsedSignificantStringTerms
ParsedSignificantStringTerms.ParsedBucket
ParsedSignificantTerms
ParsedSignificantTerms.ParsedBucket
ParsedSimpleValue
ParsedSingleBucketAggregation	A base class for all the single bucket aggregations.
ParsedSingleValueNumericMetricsAggregation
ParsedStats
ParsedStatsBucket
ParsedStringTerms
ParsedStringTerms.ParsedBucket
ParsedSum
ParsedTDigestPercentileRanks
ParsedTDigestPercentiles
ParsedTerms
ParsedTerms.ParsedBucket
ParsedTopHits
ParsedValueCount
ParsedWeightedAvg
ParseException	This exception is thrown when parse errors are encountered.
ParseException	Thrown by a WKTReader when a parsing problem occurs.
ParseField	Holds a field that can be found in a request while parsing and its different variants, which may be deprecated.
ParseField.CommonFields
ParseFieldRegistry<T>	Registry for looking things up using ParseField semantics.
ParseUtils	Deprecated. Not useful; see https://github.com/spatial4j/spatial4j/issues/19
ParsingException	Exception that can be used when parsing queries with a given XContentParser.
Passage	Represents a passage (typically a sentence of the document).
PassageFormatter	Creates a formatted snippet from the top passages.
PassageScorer	Ranks passages found by UnifiedHighlighter.
PathTrie<T>
PathTrie.Decoder
PathUtils	Utilities for creating a Path from names, or accessing the default FileSystem.
PauseAutoFollowPatternRequest	Request class for pause auto follow pattern api.
PauseFollowRequest
PayloadAttribute	The payload of a Token.
PeerFinder
PeerFinder.ConfiguredHostsResolver
PeerFinder.TransportAddressConnector
PeerRecoverySourceService	The source recovery accepts recovery requests from other peer shards and start the recovery process from this source shard to the target shard.
PeerRecoverySourceService.Actions
PeerRecoveryTargetService	The recovery target handles recoveries of peer shards of the shard+node to recover to.
PeerRecoveryTargetService.Actions
PeerRecoveryTargetService.RecoveryListener
PeersRequest
PeersResponse
PendingClusterStatesQueue	A queue that holds all "in-flight" incoming cluster states from the master.
PendingClusterStateStats	Class encapsulating stats about the PendingClusterStatsQueue
PendingClusterTask
PendingClusterTasksAction
PendingClusterTasksRequest
PendingClusterTasksRequestBuilder
PendingClusterTasksResponse
PercentageScore
PercentageScore.PercentageScoreBuilder
Percentile
PercentileIterator	Used for iterating through histogram values according to percentile levels.
PercentileRanks	An aggregation that computes approximate percentiles given values.
PercentileRanksAggregationBuilder
Percentiles	An aggregation that computes approximate percentiles.
PercentilesAggregationBuilder
PercentilesBucket
PercentilesBucketPipelineAggregationBuilder
PercentilesBucketPipelineAggregator
PercentilesMethod	An enum representing the methods for calculating percentiles
PerFieldDocValuesFormat	Enables per field docvalues support.
PerFieldMappingPostingFormatCodec	This postings format is the default PostingsFormat for Elasticsearch.
PerFieldPostingsFormat	Enables per field postings support.
PerFieldSimilarityWrapper	Provides the ability to use a different Similarity for different fields.
PersistentTaskParams	Parameters used to start persistent task
PersistentTaskPlugin	Plugin for registering persistent tasks executors.
PersistentTaskResponse	Response upon a successful start or an persistent task
PersistentTasksClusterService	Component that runs only on the master node and is responsible for assigning running tasks to nodes
PersistentTasksCustomMetaData	A cluster state record that contains a list of all running persistent tasks
PersistentTasksCustomMetaData.Assignment
PersistentTasksCustomMetaData.Builder
PersistentTasksCustomMetaData.PersistentTask<P extends PersistentTaskParams>	A record that represents a single running persistent task
PersistentTasksExecutor<Params extends PersistentTaskParams>	An executor of tasks that can survive restart of requesting or executing node.
PersistentTasksExecutorRegistry	Components that registers all persistent task executors
PersistentTasksNodeService	This component is responsible for coordination of execution of persistent tasks on individual nodes.
PersistentTasksNodeService.Status
PersistentTasksService	This service is used by persistent tasks and allocated persistent tasks to communicate changes to the master node so that the master can update the cluster state and can track of the states of the persistent tasks.
PersistentTasksService.WaitForPersistentTaskListener<P extends PersistentTaskParams>
PersistentTaskState	PersistentTaskState represents the state of the persistent tasks, as it is persisted in the cluster state.
Phase	Represents set of LifecycleActions which should be executed at a particular point in the lifecycle of an index.
PhaseExecutionInfo	This class contains information about the current phase being executed by Index Lifecycle Management on the specific index.
PhaseProgress	A class that describes a phase and its progress as a percentage
PhraseHelper	Helps the FieldOffsetStrategy with position sensitive queries (e.g.
PhraseQuery	A Query that matches documents containing a particular sequence of terms.
PhraseQuery.Builder	A builder for phrase queries.
PhraseSuggester
PhraseSuggestion	Suggestion entry returned from the PhraseSuggester.
PhraseSuggestion.Entry
PhraseSuggestion.Entry.Option
PhraseSuggestionBuilder	Defines the actual suggest command for phrase suggestions ( phrase).
PhraseSuggestionBuilder.CandidateGenerator	PhraseSuggestionBuilder.CandidateGenerator interface.
PingContextProvider
Pipeline	A pipeline is a list of Processor instances grouped under a unique id.
PipelineAggregationBuilder	A factory that knows how to create an PipelineAggregator of a specific type.
PipelineAggregator
PipelineAggregator.Parser	Parse the PipelineAggregationBuilder from a XContentParser.
PipelineConfiguration	Encapsulates a pipeline's id and configuration as a blob
PipelineProcessor
PipelineProcessor.Factory
PivotConfig	Class describing how to pivot data via GroupConfig and AggregationConfig objects
PivotConfig.Builder
PlainActionFuture<T>
PlainBlobMetaData
PlainHighlighter
PlainListenableActionFuture<T>
PlainShardIterator	The PlainShardIterator is a ShardsIterator which iterates all shards or a given shard id
PlainShardsIterator	A simple ShardsIterator that iterates a list or sub-list of shard indexRoutings.
PlainTransportFuture<V extends TransportResponse>
PlanarGraph	The computation of the IntersectionMatrix relies on the use of a structure called a "topology graph".
PlanarGraph	Represents a directed graph which is embeddable in a planar surface.
Plugin	An extension point allowing to plug in custom functionality.
PluginInfo	An in-memory representation of the plugin descriptor.
PluginsAndModules	Information about plugins and modules
PluginsService
Point	Represents a Point on the earth's surface in decimal degrees and optional altitude in meters.
Point	Represents a single point.
Point	A Point with X & Y coordinates.
PointBuilder
PointBuilder	Constructs Points from the nodes of an overlay graph.
PointExtracter	Extracts all the 0-dimensional (Point) components from a Geometry.
PointGeometryUnion	Computes the union of a Puntal geometry with another arbitrary Geometry.
PointImpl	A basic 2D implementation of a Point.
PointInSetQuery	Abstract query class to find all documents whose single or multi-dimensional point values, previously indexed with e.g.
PointInSetQuery.Stream	Iterator of encoded point values.
PointLocation	Functions for locating points within basic geometric structures such as lines and rings.
PointLocator	Computes the topological (Location) of a single point to a Geometry.
PointOnGeometryLocator	An interface for classes which determine the Location of points in a Geometry.
PointPrefixTreeFieldCacheProvider	Implementation of ShapeFieldCacheProvider designed for PrefixTreeStrategys that index points (AND ONLY POINTS!).
PointRangeQuery	Abstract class for range queries against single or multidimensional points such as IntPoint.
PointReader	One pass iterator through all points previously written with a PointWriter, abstracting away whether points are read from (offline) disk or simple arrays in heap.
PointsFormat	Encodes/decodes indexed points.
PointsReader	Abstract API to visit point values.
PointsWriter	Abstract API to write points
PointValue	Represents a dimensional point value written in the BKD tree.
PointValues	Access to indexed numeric values.
PointValues.IntersectVisitor	We recurse the BKD tree, using a provided instance of this to guide the recursion.
PointValues.Relation	Used by PointValues.intersect(org.apache.lucene.index.PointValues.IntersectVisitor) to check how each recursive cell corresponds to the query.
PointWriter	Appends many points, and then at the end provides a PointReader to iterate those points.
Polygon	Represents a closed polygon on the earth's surface.
Polygon	Represents a closed polygon on the earth's surface with optional holes
Polygon	Represents a polygon with linear edges, which may include holes.
Polygon2D	2D polygon implementation represented as a balanced interval tree of edges.
Polygonal	Identifies Geometry subclasses which are 2-dimensional and have components which have Lineal boundaries.
PolygonBuilder	The PolygonBuilder implements the groundwork to create polygons.
PolygonBuilder	Forms Polygons out of a graph of DirectedEdges.
PolygonExtracter	Extracts all the Polygon elements from a Geometry.
PolyshapeReader
PolyshapeReader.XReader	from Apache 2.0 licensed: https://github.com/googlemaps/android-maps-utils/blob/master/library/src/com/google/maps/android/PolyUtil.java
PolyshapeWriter	Wrap the 'Encoded Polyline Algorithm Format' defined in: Google Maps API with flags to encode various Shapes: Point, Line, Polygon, etc For more details, see FORMATS.md This format works well for geographic shapes (-180...+180 / -90...+90), but is not appropriate for other coordinate systems
PolyshapeWriter.Encoder	Encodes a sequence of LatLngs into an encoded path string.
PorterStemFilter	Transforms the token stream as per the Porter stemming algorithm.
PortsRange
PortsRange.PortCallback
Position	A Position indicates the position of a Location relative to a graph component (Node, Edge, or Area).
PositionIncrementAttribute	Determines the position of this token relative to the previous Token in a TokenStream, used in phrase searching.
PositionLengthAttribute	Determines how many positions this token spans.
PositionSpan	Utility class to record Positions Spans
PositiveIntOutputs	An FST Outputs implementation where each output is a non-negative long value.
PostCalendarEventRequest	Request to add a ScheduledEvent to a Machine Learning calendar
PostCalendarEventResponse	Response to adding ScheduledEvent(s) to a Machine Learning calendar
PostDataRequest	Request to post data to a Machine Learning job
PostDataRequest.JsonBuilder	Class for incrementally building a bulk document request in XContentType.JSON format
PostDataResponse	Response object when posting data to a Machine Learning Job
PostingsEnum	Iterates through the postings.
PostingsFormat	Encodes/decodes terms, postings, and proximity data.
PostingsOffsetStrategy	Uses offsets in postings -- IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS.
PostingsReaderBase	The core terms dictionaries (BlockTermsReader, BlockTreeTermsReader) interact with a single instance of this class to manage creation of PostingsEnum and PostingsEnum instances.
PostingsWithTermVectorsOffsetStrategy	Like PostingsOffsetStrategy but also uses term vectors (only terms needed) for multi-term queries.
PostingsWriterBase	Class that plugs into term dictionaries, such as BlockTreeTermsWriter, and handles writing postings.
Preallocable	Anything that can preallocate buffers given prior knowledge of the number of stored elements.
PreBuiltAnalyzerProvider
PreBuiltAnalyzerProviderFactory
PreBuiltAnalyzers
PreBuiltCacheFactory
PreBuiltCacheFactory.CachingStrategy	The strategy of caching the analyzer ONE Exactly one version is stored.
PreBuiltCacheFactory.PreBuiltCache<T>
PreBuiltTokenizers
PrecisionModel	Specifies the precision model of the Coordinates in a Geometry.
PrecisionModel.Type	The types of Precision Model which JTS supports.
PreConfiguredAnalysisComponent<T>	Shared implementation for pre-configured analysis components.
PreConfiguredCharFilter	Provides pre-configured, shared CharFilters.
PreConfiguredTokenFilter	Provides pre-configured, shared TokenFilters.
PreConfiguredTokenizer	Provides pre-configured, shared Tokenizers.
Preference	Routing Preference Type
PrefixCodedTerms	Prefix codes term instances (prefixes are shared).
PrefixCodedTerms.Builder	Builds a PrefixCodedTerms: call add repeatedly, then finish.
PrefixCodedTerms.TermIterator	An iterator over the list of terms stored in a PrefixCodedTerms.
PrefixCompletionQuery	A CompletionQuery which takes an Analyzer to analyze the prefix of the query term.
PrefixQuery	A Query that matches documents containing terms with a specified prefix.
PrefixQueryBuilder	A Query that matches documents containing terms with a specified prefix.
PrefixTreeFacetCounter	Computes facets on cells for PrefixTreeStrategy.
PrefixTreeFacetCounter.FacetVisitor	A callback/visitor of facet counts.
PrefixTreeStrategy	An abstract SpatialStrategy based on SpatialPrefixTree.
PreparedGeometry	An interface for classes which prepare Geometrys in order to optimize the performance of repeated calls to specific geometric operations.
PreparedGeometryFactory	A factory for creating PreparedGeometrys.
PreparedLineString	A prepared version for Lineal geometries.
PreparedPoint	A prepared version for Puntal geometries.
PreparedPolygon	A prepared version for Polygonal geometries.
PreviewDatafeedRequest	Request to preview a MachineLearning Datafeed
PreviewDatafeedResponse	Response containing a datafeed preview in JSON format
PreviewTransformRequest
PreviewTransformResponse
PreVoteCollector
PreVoteRequest
PreVoteResponse
PrimaryMissingActionException
PrimaryReplicaSyncer
PrimaryReplicaSyncer.ResyncRequest
PrimaryReplicaSyncer.ResyncTask
PrimaryReplicaSyncer.ResyncTask.Status
PrimaryReplicaSyncer.SyncAction
PrimaryShardAllocator	The primary shard allocator allocates unassigned primary shards to nodes that hold valid copies of the unassigned primaries.
PrintStreamInfoStream	InfoStream implementation over a PrintStream such as System.out.
PrioritizedCallable<T>
PrioritizedEsThreadPoolExecutor	A prioritizing executor which uses a priority queue as a work queue.
PrioritizedEsThreadPoolExecutor.Pending
PrioritizedRunnable
Priority
PriorityComparator	A comparator that compares ShardRouting based on it's indexes priority (index.priority), it's creation date (index.creation_date), or eventually by it's index name in reverse order.
PriorityQueue<T>	A PriorityQueue maintains a partial ordering of its elements such that the least element can always be found in constant time.
PriorityQueue	A priority queue over a set of Comparable objects.
PrivateBinder	Returns a binder whose configuration information is hidden from its environment by default.
PrivateElements	A private collection of elements that are hidden from the enclosing injector or module by default.
PrivateElementsImpl
PrivateModule	A module whose configuration information is hidden from its environment by default.
Probes
ProcessClusterEventTimeoutException
ProcessInfo
Processor	A processor implementation may modify the data belonging to a document.
Processor.Factory	A factory that knows how to construct a processor based on a map of maps.
Processor.Parameters	Infrastructure class that holds services that can be used by processor factories to create processor instances and that gets passed around to all IngestPlugins.
ProcessorInfo
ProcessProbe
ProcessService
ProcessStats
ProcessStats.Cpu
ProcessStats.Mem
ProfileResult	This class is the internal representation of a profiled Query, corresponding to a single node in the query tree.
Profilers	Wrapper around all the profilers that makes management easier.
ProfileShardResult
ProfileWeight	Weight wrapper that will compute how much time it takes to build the Scorer and then return a Scorer that is wrapped in order to compute timings as well.
ProfilingAggregator
ProfilingLeafBucketCollector
ProtocolUtils	Common utilities used for XPack protocol classes
ProvidedBy	A pointer to the default provider type for a type.
Provider<T>	An object capable of providing instances of type T.
ProviderBinding<T extends Provider<?>>	A binding to a Provider that delegates to the binding for the provided type.
ProviderInstanceBinding<T>	A binding to a provider instance.
ProviderInstanceBindingImpl<T>
ProviderKeyBinding<T>	A binding to a provider key.
ProviderLookup<T>	A lookup of the provider for a type.
ProviderLookup.ProviderImpl<T>
ProviderMethod<T>	A provider that invokes a method and returns its result.
ProviderMethodsModule	Creates bindings to methods annotated with @Provides.
Providers	Static utility methods for creating and working with instances of Provider.
ProviderWithDependencies<T>	A provider with dependencies on other injected types.
Provides	Annotates methods of a Module to create a provider method binding.
ProvisionException	Indicates that there was a runtime failure while providing an instance.
Publication
PublicationTransportHandler
PublicationTransportHandler.PublicationContext
PublishClusterStateAction
PublishClusterStateAction.CommitClusterStateRequest
PublishClusterStateAction.IncomingClusterStateListener
PublishClusterStateStats	Class encapsulating stats about the PublishClusterStateAction
PublishRequest	Request which is used by the master node to publish cluster state changes.
PublishResponse	Response to a PublishRequest, carrying the term and version of the request.
PublishWithJoinResponse	Response to a PublishRequest.
Puntal	Identifies Geometry subclasses which are 0-dimensional and with components which are Points.
PushPostingsWriterBase	Extension of PostingsWriterBase, adding a push API for writing each element of the postings.
PutAutoFollowPatternRequest
PutCalendarJobRequest	Request class for adding Machine Learning Jobs to an existing calendar
PutCalendarRequest	Request to create a new Machine Learning calendar
PutCalendarResponse
PutDatafeedRequest	Request to create a new Machine Learning Datafeed given a DatafeedConfig configuration
PutDatafeedResponse	Response containing the newly created DatafeedConfig
PutDataFrameAnalyticsRequest
PutDataFrameAnalyticsResponse
PutFilterRequest	Request to create a new Machine Learning MlFilter given a MlFilter configuration
PutFilterResponse	Response containing the newly created MlFilter
PutFollowRequest
PutFollowResponse
PutIndexTemplateAction
PutIndexTemplateRequest	A request to create an index template.
PutIndexTemplateRequest	A request to create an index template.
PutIndexTemplateRequestBuilder
PutJobRequest	Request to create a new Machine Learning Job given a Job configuration
PutJobResponse	Response containing the newly created Job
PutLicenseRequest
PutLicenseResponse
PutLifecyclePolicyRequest
PutMappingAction
PutMappingClusterStateUpdateRequest	Cluster state update request that allows to put a mapping
PutMappingRequest	Puts mapping definition registered under a specific type into one or more indices.
PutMappingRequest	Put a mapping definition into one or more indices.
PutMappingRequestBuilder	Builder for a put mapping request
PutPipelineAction
PutPipelineRequest
PutPipelineRequestBuilder
PutPipelineTransportAction
PutPolicyRequest
PutPrivilegesRequest	Request object for creating/updating application privileges.
PutPrivilegesResponse	Response when creating/updating one or more application privileges to the security index.
PutRepositoryAction	Register repository action
PutRepositoryRequest	Register repository request.
PutRepositoryRequestBuilder	Register repository request builder
PutRoleMappingRequest	Request object to create or update a role mapping.
PutRoleMappingResponse	Response when adding/updating a role mapping.
PutRoleRequest	Request object to create or update a role.
PutRoleResponse	Response when adding a role to the native roles store.
PutRollupJobRequest
PutSnapshotLifecyclePolicyRequest
PutStoredScriptAction
PutStoredScriptRequest
PutStoredScriptRequestBuilder
PutTransformRequest
PutUserRequest	Request object to create or update a user in the native realm.
PutUserResponse	Response when adding a user to the native realm.
PutWatchRequest	This request class contains the data needed to create a watch along with the name of the watch.
PutWatchResponse
QuadPrefixTree	A SpatialPrefixTree which uses a quad tree in which an indexed term will be generated for each cell, 'A', 'B', 'C', 'D'.
QuadPrefixTree.Factory	Factory for creating QuadPrefixTree instances with useful defaults
Quadrant	Utility functions for working with quadrants, which are numbered as follows:
Quantiles	Quantiles Result POJO
Queries
Query	The abstract base class for queries.
QueryBuilder	Creates queries from the Analyzer chain.
QueryBuilder
QueryBuilders	Utility class to create search queries.
QueryCache	A cache for queries.
QueryCache
QueryCacheStats
QueryCachingPolicy	A policy defining which filters should be cached.
QueryConfig	Object for encapsulating the desired Query for a DataFrameAnalysis
QueryConfig	Object for encapsulating the desired Query for a Transform
QueryExplanation
QueryFetchSearchResult
QueryParser	This class is generated by JavaCC.
QueryParser<QB extends QueryBuilder>	Defines a query parser that is able to parse QueryBuilders from XContent.
QueryParser.Operator	The default operator for parsing queries.
QueryParserBase	This class is overridden by QueryParser in QueryParser.jj and acts to separate the majority of the Java code from the .jj grammar file.
QueryParserConstants	Token literal values and constants.
QueryParserHelper	Helpers to extract and expand field names and boosts
QueryParsers
QueryParserTokenManager	Token Manager.
QueryPhase	Query phase of a search request, used to run the query and get back from each shard information about the matching documents (document ids and score or sort criteria) so that matches can be reduced on the coordinating node
QueryPhaseExecutionException
QueryProfileBreakdown	A record of timings for the various operations that may happen during query execution.
QueryProfiler	This class acts as a thread-local storage for profiling a query.
QueryProfileShardResult	A container class to hold the profile results for a single shard in the request.
QueryRescoreMode
QueryRescorer	A Rescorer that uses a provided Query to assign scores to the first-pass hits.
QueryRescorer
QueryRescorer.QueryRescoreContext
QueryRescorerBuilder
QueryRewriteContext	Context object used to rewrite QueryBuilder instances into simplified version.
QueryScorer	Scorer implementation which scores text fragments by the number of unique query terms found.
QuerySearchRequest
QuerySearchResult
QueryShardContext	Context object used to create lucene queries on the shard level.
QueryShardException	Exception that is thrown when creating lucene queries on the shard
QueryStringQueryBuilder	A query that parses a query string and runs it.
QueryStringQueryParser	A XQueryParser that uses the MapperService in order to build smarter queries based on the mapping information.
QueryTimingType
QueryValidationException	This exception can be used to indicate various reasons why validation of a query has failed.
QueryVisitor	Allows recursion through a query tree
QueuedWatch
QueueResizingEsThreadPoolExecutor	An extension to thread pool executor, which automatically adjusts the queue size of the ResizableBlockingQueue according to Little's Law.
R2Vector	R2Vector represents a vector in the two-dimensional space.
RadixSelector	Radix selector.
RamAccountingTermsEnum	TermsEnum that takes a CircuitBreaker, increasing the breaker every time .next(...) is called.
RAMDirectory	Deprecated. This class uses inefficient synchronization and is discouraged in favor of MMapDirectory.
RAMFile	Deprecated. This class uses inefficient synchronization and is discouraged in favor of MMapDirectory.
RAMInputStream	Deprecated. This class uses inefficient synchronization and is discouraged in favor of MMapDirectory.
RAMOutputStream	Deprecated. This class uses inefficient synchronization and is discouraged in favor of MMapDirectory.
RamUsageEstimator	Estimates the size (memory representation) of Java objects.
RandomAccessInput	Random Access Index API.
RandomizedHashOrderMixer	Randomized hash order.
Randomness	Provides factory methods for producing reproducible sources of randomness.
RandomScoreFunction	Pseudo randomly generate a score for each LeafScoreFunction.score(int, float).
RandomScoreFunctionBuilder	A function that computes a random score for the matched documents
Range	A range aggregation.
Range.Bucket	A bucket associated with a specific range
RangeAggregationBuilder
RangeAggregator
RangeAggregator.Range
RangeAggregator.Unmapped<R extends RangeAggregator.Range>
RangeAggregatorFactory
RangeFieldMapper	A FieldMapper for indexing numeric and date ranges, and creating queries
RangeFieldMapper.Builder
RangeFieldMapper.Defaults
RangeFieldMapper.Range	Class defining a range
RangeFieldMapper.RangeFieldType
RangeFieldMapper.TypeParser
RangeHistogramAggregator
RangeQueryBuilder	A Query that matches documents within an range of terms.
RangeType	Enum defining the type of range
RangeType.LengthType
RankEvalRequest	Request to perform a search ranking evaluation.
RankEvalResponse	Returns the results for a RankEvalRequest. The response contains a detailed section for each evaluation query in the request and possible failures that happened when execution individual queries.
RankEvalSpec	Specification of the ranking evaluation request. This class groups the queries to evaluate, including their document ratings, and the evaluation metric including its parameters.
RareTerms
RareTerms.Bucket	A bucket that is associated with a single term
RareTermsAggregationBuilder
RareTermsAggregatorFactory
RareTermsAggregatorFactory.ExecutionMode
RatedDocument	Represents a document (specified by its _index/_id) and its corresponding rating with respect to a specific search query.
RatedRequest	Definition of a particular query in the ranking evaluation request. This usually represents a single user search intent and consists of an id (ideally human readable and referencing the search intent), the list of indices to be queries and the SearchSourceBuilder that will be used to create the search request for this search intent. Alternatively, a template id and template parameters can be provided instead. Finally, a list of rated documents for this query also needs to be provided.
RatedSearchHit	Combines a SearchHit with a document rating.
RateLimitedIndexOutput	A rate limiting IndexOutput
RateLimiter	Abstract base class to rate limit IO.
RateLimiter.SimpleRateLimiter	Simple class to rate limit IO.
RateLimitingInputStream	Rate limiting wrapper for InputStream
RateLimitingInputStream.Listener
RatioValue	Utility class to represent ratio and percentage values between 0 and 100
RawTaskStatus	Raw, unparsed status from the task results index.
RayCrossingCounter	Counts the number of segments crossed by a horizontal ray extending to the right from a given point, in an incremental fashion.
ReaderSlice	Subreader slice from a parent composite reader.
ReaderUtil	Common util methods for dealing with IndexReaders and IndexReaderContexts.
ReadOnlyAction
ReadOnlyEngine	A basic read-only engine that allows switching a shard to be true read-only temporarily or permanently.
RealtimeRequest	Indicates that a request can execute in realtime (reads from the translog).
RebalanceOnlyWhenActiveAllocationDecider	Only allow rebalancing when all shards are active within the shard replication group.
ReceiveTimeoutTransportException
ReciprocalDoubleValuesSource	Transforms a DoubleValuesSource using the formula v = k / (v + k)
Reconfigurator	Computes the optimal configuration of voting nodes in the cluster.
RecordedValuesIterator	Used for iterating through all recorded histogram values using the finest granularity steps supported by the underlying representation.
RecoverFilesRecoveryException
RecoveriesCollection	This class holds a collection of all on going recoveries on the current node (i.e., the node is the target node of those recoveries).
RecoveriesCollection.RecoveryRef	a reference to RecoveryTarget, which implements AutoCloseable.
RecoveryAction	Recovery information action
RecoveryCleanFilesRequest
RecoveryEngineException
RecoveryFailedException
RecoveryFileChunkRequest
RecoveryFilesInfoRequest
RecoveryRequest	Request for recovery information
RecoveryRequestBuilder	Recovery information request builder.
RecoveryResponse	Information regarding the recovery state of indices and their associated shards.
RecoveryResponse
RecoverySettings
RecoverySource	Represents the recovery source of a shard.
RecoverySource.EmptyStoreRecoverySource	Recovery from a fresh copy
RecoverySource.ExistingStoreRecoverySource	Recovery from an existing on-disk store
RecoverySource.LocalShardsRecoverySource	recovery from other shards on same node (shrink index action)
RecoverySource.PeerRecoverySource	peer recovery from a primary shard
RecoverySource.SnapshotRecoverySource	recovery from a snapshot
RecoverySource.Type
RecoverySourceHandler	RecoverySourceHandler handles the three phases of shard recovery, which is everything relating to copying the segment files as well as sending translog operations across the wire once the segments have been copied.
RecoveryState	Keeps track of state related to shard recovery.
RecoveryState.File
RecoveryState.Index
RecoveryState.Stage
RecoveryState.Timer
RecoveryState.Translog
RecoveryState.VerifyIndex
RecoveryStats	Recovery related statistics, starting at the shard level and allowing aggregation to indices and node level
RecoveryTarget	Represents a recovery where the current node is the target node of the recovery.
RecoveryTargetHandler
RecoveryTranslogOperationsRequest
Rectangle	Represents a lat/lon rectangle.
Rectangle	Represents a lat/lon rectangle in decimal degrees and optional altitude in meters.
Rectangle	A rectangle aligned with the axis (i.e.
Rectangle2D	2D rectangle implementation containing geo spatial logic.
RectangleContains	Optimized implementation of the contains spatial predicate for cases where the first Geometry is a rectangle.
RectangleImpl	A simple Rectangle implementation that also supports a longitudinal wrap-around.
RectangleIntersects	Implementation of the intersects spatial predicate optimized for the case where one Geometry is a rectangle.
RectangleLineIntersector	Computes whether a rectangle intersects line segments.
RecursivePrefixTreeStrategy	A PrefixTreeStrategy which uses AbstractVisitingPrefixTreeQuery.
Recycler<T>	A recycled object, note, implementations should support calling obtain and then recycle on different threads.
Recycler.C<T>
Recycler.Factory<T>
Recycler.V<T>
Recyclers
RecyclingByteBlockAllocator	A ByteBlockPool.Allocator implementation that recycles unused byte blocks in a buffer and reuses them in subsequent calls to RecyclingByteBlockAllocator.getByteBlock().
RecyclingIntBlockAllocator	A IntBlockPool.Allocator implementation that recycles unused int blocks in a buffer and reuses them in subsequent calls to RecyclingIntBlockAllocator.getIntBlock().
ReduceSearchPhaseException	A failure during a reduce phase (when receiving results from several shards, and reducing them into one or more results and possible actions).
RefCount<T>	Manages reference counting for a given object.
RefCounted	An interface for objects that need to be notified when all reference to itself are not in user anymore.
ReferenceManager<G>	Utility class to safely share instances of a certain type across multiple threads, while periodically refreshing them.
ReferenceManager.RefreshListener	Use to receive notification when a refresh has finished.
RefreshAction
RefreshFailedEngineException
RefreshListeners	Allows for the registration of listeners that are called when a change becomes visible for search.
RefreshPolicy	Enumeration of values that control the refresh policy for a request that supports specifying a refresh policy.
RefreshRequest	A refresh request making all operations performed since the last refresh available for search.
RefreshRequestBuilder	A refresh request making all operations performed since the last refresh available for search.
RefreshResponse	The response of a refresh action.
RefreshStats
Regex
RegexCompletionQuery	A CompletionQuery which takes a regular expression as the prefix of the query term.
RegexOptions	Regular expression options for completion suggester
RegexOptions.Builder	Options for regular expression queries
RegExp	Regular Expression extension to Automaton.
RegexpFlag	Regular expression syntax flags.
RegexpQuery	A fast regular expression query based on the org.apache.lucene.util.automaton package.
RegexpQueryBuilder	A Query that does fuzzy matching for a specific value.
ReindexRequest	Request to reindex some documents from one index to another.
RejectAwareActionListener<T>
RelateComputer	Computes the topological relationship between two Geometries.
RelateNode	Represents a node in the topological graph used to compute spatial relationships.
RelateNodeFactory	Used by the NodeMap in a RelateNodeGraph to create RelateNodes.
RelateNodeGraph	Implements the simple graph of Nodes and EdgeEnd which is all that is required to determine topological relationships between Geometries.
RelateOp	Implements the SFS relate() generalized spatial predicate on two Geometrys.
Releasable	Specialization of AutoCloseable that may only throw an ElasticsearchException.
ReleasableBytesStreamOutput	An bytes stream output that allows providing a BigArrays instance expecting it to require releasing its content (ReleasableBytesStreamOutput.bytes()) once done.
ReleasableLock	Releasable lock used inside of Engine implementations
ReleasablePagedBytesReference	An extension to PagedBytesReference that requires releasing its content.
Releasables	Utility methods to work with Releasables.
ReloadableCustomAnalyzer
ReloadablePlugin	An extension point for Plugins that can be reloaded.
ReloadAnalyzersRequest	Request for the _reload_search_analyzers API
ReloadAnalyzersResponse	The response object that will be returned when reloading analyzers
ReloadAnalyzersResponse.ReloadDetails
RemoteClusterAware	Base class for all services and components that need up-to-date information about the registered remote clusters
RemoteClusterAwareRequest
RemoteClusterService	Basic service for accessing remote clusters via gateway nodes
RemoteConnectionInfo	This class encapsulates all remote cluster information to be rendered on _remote/info requests.
RemoteConnectionManager
RemoteInfo
RemoteInfoAction
RemoteInfoRequest
RemoteInfoResponse
RemoteRecoveryTargetHandler
RemoteTransportException	A remote exception for an action.
RemovalListener<K,V>
RemovalNotification<K,V>
RemovalNotification.RemovalReason
RemoveIndexLifecyclePolicyRequest
RemoveIndexLifecyclePolicyResponse
RemovePersistentTaskAction
RemovePersistentTaskAction.Request
RemovePersistentTaskAction.RequestBuilder
RemovePersistentTaskAction.TransportAction
ReplicaAfterPrimaryActiveAllocationDecider	An allocation strategy that only allows for a replica to be allocated when the primary is active.
ReplicaShardAllocator
ReplicatedWriteRequest<R extends ReplicatedWriteRequest<R>>	Requests that are both ReplicationRequests (run on a shard's primary first, then the replica) and WriteRequest (modify documents on a shard), for example BulkShardRequest, IndexRequest, and DeleteRequest.
ReplicationGroup	Replication group for a shard.
ReplicationOperation<Request extends ReplicationRequest<Request>,ReplicaRequest extends ReplicationRequest<ReplicaRequest>,PrimaryResultT extends ReplicationOperation.PrimaryResult<ReplicaRequest>>
ReplicationOperation.Primary<RequestT extends ReplicationRequest<RequestT>,ReplicaRequestT extends ReplicationRequest<ReplicaRequestT>,PrimaryResultT extends ReplicationOperation.PrimaryResult<ReplicaRequestT>>	An encapsulation of an operation that is to be performed on the primary shard
ReplicationOperation.PrimaryResult<RequestT extends ReplicationRequest<RequestT>>
ReplicationOperation.ReplicaResponse	An interface to encapsulate the metadata needed from replica shards when they respond to operations performed on them.
ReplicationOperation.Replicas<RequestT extends ReplicationRequest<RequestT>>	An encapsulation of an operation that will be executed on the replica shards, if present.
ReplicationOperation.RetryOnPrimaryException
ReplicationRequest<Request extends ReplicationRequest<Request>>	Requests that are run on a particular replica, first on the primary and then on the replicas like IndexRequest or TransportShardRefreshAction.
ReplicationRequestBuilder<Request extends ReplicationRequest<Request>,Response extends ActionResponse,RequestBuilder extends ReplicationRequestBuilder<Request,Response,RequestBuilder>>
ReplicationResponse	Base class for write action responses.
ReplicationResponse.ShardInfo
ReplicationResponse.ShardInfo.Failure
ReplicationTask	Task that tracks replication actions.
ReplicationTask.Status
ReplicationTracker	This class is responsible for tracking the replication group with its progress and safety markers (local and global checkpoints).
ReplicationTracker.CheckpointState
ReplicationTracker.PrimaryContext	Represents the sequence number component of the primary context.
RepositoriesMetaData	Contains metadata about registered snapshot repositories
RepositoriesModule	Sets up classes for Snapshot/Restore.
RepositoriesService	Service responsible for maintaining and providing access to snapshot repositories on nodes.
Repository	An interface for interacting with a repository in snapshot and restore.
Repository.Factory	An factory interface for constructing repositories.
RepositoryCleanupInProgress
RepositoryCleanupInProgress.Entry
RepositoryCleanupResult
RepositoryData	A class that represents the data in a repository, as captured in the repository's index blob.
RepositoryException	Generic repository exception
RepositoryMetaData	Metadata about registered repository
RepositoryMissingException	Repository missing exception
RepositoryPlugin	An extension point for Plugin implementations to add custom snapshot repositories.
RepositoryVerificationException	Repository verification exception
Request	HTTP Request to Elasticsearch.
RequestCacheStats
RequestHandlerRegistry<Request extends TransportRequest>
RequestOptions	The portion of an HTTP request to Elasticsearch that can be manipulated without changing Elasticsearch's behavior.
RequestOptions.Builder	Builds RequestOptions.
Requests	A handy one stop shop for creating requests (make sure to import static this class).
RequestValidators<T extends ActionRequest>
RequestValidators.RequestValidator<T extends ActionRequest>	A validator that validates an request associated with indices before executing it.
RerouteExplanation	Class encapsulating the explanation for a single AllocationCommand taken from the Deciders
RerouteService	Asynchronously performs a cluster reroute, updating any shard states and rebalancing the cluster if appropriate.
RescoreContext	Context available to the rescore while it is running.
RescorePhase	Rescore phase of a search request, used to run potentially expensive scoring models against the top matching documents.
Rescorer	Re-scores the topN results (TopDocs) from an original query.
Rescorer	A query rescorer interface used to re-rank the Top-K results of a previously executed search.
RescorerBuilder<RB extends RescorerBuilder<RB>>	The abstract base builder for instances of RescorerBuilder.
ResizeAction
ResizeAllocationDecider	An allocation decider that ensures we allocate the shards of a target index for resize operations next to the source primaries
ResizeRequest	Request class to shrink an index into a single shard
ResizeRequestBuilder
ResizeResponse	A response for a resize index action, either shrink or split index.
ResizeType	The type of the resize operation
ResourceAlreadyExistsException
ResourceLoader	Abstraction for loading resources (streams, files, and classes).
ResourceNotFoundException	Generic ResourceNotFoundException corresponding to the RestStatus.NOT_FOUND status code
ResourceWatcher	Abstract resource watcher interface.
ResourceWatcherService	Generic resource watcher service Other elasticsearch services can register their resource watchers with this service using ResourceWatcherService.add(ResourceWatcher) method.
ResourceWatcherService.Frequency
Response	Holds an elasticsearch response.
ResponseCollectorService	Collects statistics about queue size, response time, and service time of tasks executed on each node, making the EWMA of the values available to the coordinating node.
ResponseCollectorService.ComputedNodeStats	Struct-like class encapsulating a point-in-time snapshot of a particular node's statistics.
ResponseException	Exception thrown when an elasticsearch node responds to a request with a status code that indicates an error.
ResponseHandlerFailureTransportException	A failure to handle the response of a transaction action.
ResponseListener	Listener to be provided when calling async performRequest methods provided by RestClient.
RestActionListener<Response>	An action listener that requires RestActionListener.processResponse(Object) to be implemented and will automatically handle failures.
RestActions
RestActions.NodesResponseRestListener<NodesResponse extends BaseNodesResponse & ToXContent>	NodesResponseRestBuilderListener automatically translates any BaseNodesResponse (multi-node) response that is ToXContent-compatible into a RestResponse with the necessary header info (e.g., "cluster_name").
RestAddVotingConfigExclusionAction
RestAliasAction
RestAllocationAction
RestAnalyzeAction
RestAnalyzeAction.Fields
RestBuilderListener<Response>	A REST action listener that builds an XContentBuilder based response.
RestBulkAction	{ "index" : { "_index" : "test", "_type" : "type1", "_id" : "1" } { "type1" : { "field1" : "value1" } } { "delete" : { "_index" : "test", "_type" : "type1", "_id" : "2" } } { "create" : { "_index" : "test", "_type" : "type1", "_id" : "1" } { "type1" : { "field1" : "value1" } }
RestCancelTasksAction
RestCatAction
RestCatRecoveryAction	RestRecoveryAction provides information about the status of replica recovery in a string format, designed to be used at the command line.
RestChannel	A channel used to construct bytes / builder based outputs, and send responses.
RestCleanupRepositoryAction	Cleans up a repository
RestClearIndicesCacheAction
RestClearScrollAction
RestClearVotingConfigExclusionsAction
RestClient	Client that connects to an Elasticsearch cluster through HTTP.
RestClient.FailureListener	Listener that allows to be notified whenever a failure happens.
RestClientBuilder	Helps creating a new RestClient.
RestClientBuilder.HttpClientConfigCallback	Callback used to customize the CloseableHttpClient instance used by a RestClient instance.
RestClientBuilder.RequestConfigCallback	Callback used the default RequestConfig being set to the CloseableHttpClient
RestCloseIndexAction
RestClusterAllocationExplainAction	Class handling cluster allocation explanation at the REST level
RestClusterGetSettingsAction
RestClusterHealthAction
RestClusterRerouteAction
RestClusterSearchShardsAction
RestClusterStateAction
RestClusterStatsAction
RestClusterUpdateSettingsAction
RestController
RestCountAction
RestCountAction
RestCreateIndexAction
RestCreateSnapshotAction	Creates a new snapshot
RestDeleteAction
RestDeleteIndexAction
RestDeleteIndexTemplateAction
RestDeletePipelineAction
RestDeleteRepositoryAction	Unregisters a repository
RestDeleteSnapshotAction	Deletes a snapshot
RestDeleteStoredScriptAction
RestExplainAction	Rest action for computing a score explanation for specific documents.
RestFieldCapabilitiesAction
RestFielddataAction	Cat API class to display information about the size of fielddata fields per node
RestFlushAction
RestForceMergeAction
RestGetAction
RestGetAliasesAction	The REST handler for get alias and head alias APIs.
RestGetFieldMappingAction
RestGetIndexTemplateAction	The REST handler for get template and head template APIs.
RestGetIndicesAction	The REST handler for get index and head index APIs.
RestGetMappingAction
RestGetPipelineAction
RestGetRepositoriesAction	Returns repository information
RestGetSettingsAction
RestGetSnapshotsAction	Returns information about snapshot
RestGetSourceAction	The REST handler for get source and head source APIs.
RestGetStoredScriptAction
RestGetTaskAction
RestHandler	Handler for REST requests
RestHealthAction
RestHighLevelClient	High level REST client that wraps an instance of the low level RestClient and allows to build requests and read responses.
RestIndexAction
RestIndexDeleteAliasesAction
RestIndexPutAliasAction
RestIndicesAction
RestIndicesAliasesAction
RestIndicesSegmentsAction
RestIndicesShardStoresAction	Rest action for IndicesShardStoresAction
RestIndicesStatsAction
RestListTasksAction
RestMainAction
RestMasterAction
RestMultiGetAction
RestMultiSearchAction
RestMultiTermVectorsAction
RestNodeAttrsAction
RestNodesAction
RestNodesHotThreadsAction
RestNodesInfoAction
RestNodesStatsAction
RestNodesUsageAction
RestOpenIndexAction
RestoreClusterStateListener
RestoreInfo	Information about successfully completed restore operation.
RestoreInProgress	Meta data about restore processes that are currently executing
RestoreInProgress.Builder
RestoreInProgress.Entry	Restore metadata
RestoreInProgress.ShardRestoreStatus	Represents status of a restored shard
RestoreInProgress.State	Shard restore process state
RestoreInProgressAllocationDecider	This AllocationDecider prevents shards that have failed to be restored from a snapshot to be allocated.
RestoreService	Service responsible for restoring snapshots
RestoreService.RestoreCompletionResponse
RestoreService.RestoreInProgressUpdater
RestoreSnapshotAction	Restore snapshot action
RestoreSnapshotRequest	Restore snapshot request
RestoreSnapshotRequestBuilder	Restore snapshot request builder
RestoreSnapshotResponse	Contains information about restores snapshot
RestPendingClusterTasksAction
RestPendingClusterTasksAction
RestPluginsAction
RestPutIndexTemplateAction
RestPutMappingAction
RestPutPipelineAction
RestPutRepositoryAction	Registers repositories
RestPutStoredScriptAction
RestRecoveryAction	REST handler to report on index recoveries.
RestRefreshAction
RestReloadSecureSettingsAction
RestRemoteClusterInfoAction
RestRepositoriesAction	Cat API class to display information about snapshot repositories
RestRequest
RestRequest.BadParameterException
RestRequest.ContentTypeHeaderException
RestRequest.Method
RestResizeHandler
RestResizeHandler.RestCloneIndexAction
RestResizeHandler.RestShrinkIndexAction
RestResizeHandler.RestSplitIndexAction
RestResponse
RestResponseListener<Response>	A REST enabled action listener that has a basic onFailure implementation, and requires sub classes to only implement RestResponseListener.buildResponse(Object).
RestRestoreSnapshotAction	Restores a snapshot
RestRolloverIndexAction
RestSearchAction
RestSearchScrollAction
RestSegmentsAction
RestShardsAction
RestSimulatePipelineAction
RestSnapshotAction	Cat API class to display information about snapshots
RestSnapshotsStatusAction	Returns status of currently running snapshot
RestStatus
RestStatusToXContentListener<Response extends StatusToXContentObject>	Content listener that extracts that RestStatus from the response.
RestSyncedFlushAction
RestTable
RestTasksAction
RestTemplatesAction
RestTermVectorsAction	This class parses the json request and translates it into a TermVectorsRequest.
RestThreadPoolAction
RestToXContentListener<Response extends ToXContentObject>	A REST based action listener that assumes the response is of type ToXContent and automatically builds an XContent based response (wrapping the toXContent in startObject/endObject).
RestUpdateAction
RestUpdateSettingsAction
RestUpgradeAction
RestUpgradeStatusAction
RestUtils
RestValidateQueryAction
RestVerifyRepositoryAction
Result	Contains common attributes for results.
ResumeAutoFollowPatternRequest	Request class for resume auto follow pattern api.
ResumeFollowRequest
ResyncReplicationRequest	Represents a batch of operations sent from the primary to its replicas during the primary-replica resync.
ResyncReplicationResponse
RetentionLease	A "shard history retention lease" (or "retention lease" for short) is conceptually a marker containing a retaining sequence number such that all operations with sequence number at least that retaining sequence number will be retained during merge operations (which could otherwise merge away operations that have been soft deleted).
RetentionLeaseActions	This class holds all actions related to retention leases.
RetentionLeaseActions.Add
RetentionLeaseActions.Add.TransportAction
RetentionLeaseActions.AddRequest
RetentionLeaseActions.Remove
RetentionLeaseActions.Remove.TransportAction
RetentionLeaseActions.RemoveRequest
RetentionLeaseActions.Renew
RetentionLeaseActions.Renew.TransportAction
RetentionLeaseActions.RenewRequest
RetentionLeaseActions.Response
RetentionLeaseAlreadyExistsException
RetentionLeaseBackgroundSyncAction	Replication action responsible for background syncing retention leases to replicas.
RetentionLeaseBackgroundSyncAction.Request
RetentionLeaseInvalidRetainingSeqNoException
RetentionLeaseNotFoundException
RetentionLeases	Represents a versioned collection of retention leases.
RetentionLeaseStats	Represents retention lease stats.
RetentionLeaseSyncAction	Write action responsible for syncing retention leases to replicas.
RetentionLeaseSyncAction.Request
RetentionLeaseSyncAction.Response
RetentionLeaseSyncer	A functional interface that represents a method for syncing retention leases to replica shards after a new retention lease is added on the primary.
RethrottleRequest	A request changing throttling of a task.
RetryLifecyclePolicyRequest
ReverseNested	A reverse nested aggregation.
ReverseNestedAggregationBuilder
ReverseNestedAggregator
ReverseNestedAggregatorFactory
RevertModelSnapshotRequest	A request to revert to a specific model snapshot for a given job
RevertModelSnapshotResponse	A response containing the reverted model snapshot
Rewriteable<T>	A basic interface for rewriteable classes.
RoaringDocIdSet	DocIdSet implementation inspired from http://roaringbitmap.org/ The space is divided into blocks of 2^16 bits and each block is encoded independently.
RoaringDocIdSet.Builder	A builder of RoaringDocIdSets.
RobustLineIntersector	A robust version of LineIntersector.
Role	Represents an aggregation of privileges.
Role.Builder
Role.ClusterPrivilegeName	Canonical cluster privilege names.
Role.IndexPrivilegeName	Canonical index privilege names.
RoleMapperExpression	Implementations of this interface represent an expression used for user role mapping that can later be resolved to a boolean value.
RoleMapperExpressionParser	Parses the JSON (XContent) based boolean expression DSL into a tree of RoleMapperExpression objects.
RollableIndexCaps	Represents the rollup capabilities of a non-rollup index.
RollingBuffer<T extends RollingBuffer.Resettable>	Acts like forever growing T[], but internally uses a circular buffer to reuse instances of T.
RollingBuffer.Resettable	Implement to reset an instance
RolloverAction
RolloverAction
RolloverInfo	Class for holding Rollover related information within an index
RolloverRequest	Request class to swap index under an alias upon satisfying conditions Note: there is a new class with the same name for the Java HLRC that uses a typeless format.
RolloverRequest	Request class to swap index under an alias upon satisfying conditions
RolloverRequestBuilder
RolloverResponse	Response object for RolloverRequest API Note: there is a new class with the same name for the Java HLRC that uses a typeless format.
RolloverResponse	Response object for RolloverRequest API
RollupClient	A wrapper for the RestHighLevelClient that provides methods for accessing the Elastic Rollup-related methods
RollupJobCaps	Represents the Rollup capabilities for a specific job on a single rollup index
RollupJobCaps.RollupFieldCaps
RollupJobConfig	This class holds the configuration details of a rollup job, such as the groupings, metrics, what index to rollup and where to roll them to.
RootObjectMapper
RootObjectMapper.Builder
RootObjectMapper.Defaults
RootObjectMapper.TypeParser
RotationShardShuffler	Basic ShardShuffler implementation that uses an AtomicInteger to generate seeds and uses a rotation to permute shards.
Rounding	A strategy for rounding date/time based values.
Rounding.Builder
Rounding.DateTimeUnit
RoutingAllocation	The RoutingAllocation keep the state of the current allocation of shards and holds the AllocationDeciders which are responsible for the current routing state.
RoutingAllocation.DebugMode
RoutingChangesObserver	Records changes made to RoutingNodes during an allocation round.
RoutingChangesObserver.AbstractRoutingChangesObserver	Abstract implementation of RoutingChangesObserver that does not take any action.
RoutingChangesObserver.DelegatingRoutingChangesObserver
RoutingException	A base Exceptions for all exceptions thrown by routing related operations.
RoutingExplanations	Class used to encapsulate a number of RerouteExplanation explanations.
RoutingFieldMapper
RoutingFieldMapper.Builder
RoutingFieldMapper.Defaults
RoutingFieldMapper.TypeParser
RoutingMissingException
RoutingNode	A RoutingNode represents a cluster node associated with a single DiscoveryNode including all shards that are hosted on that nodes.
RoutingNodes	RoutingNodes represents a copy the routing information contained in the cluster state.
RoutingNodes.UnassignedShards
RoutingNodesChangedObserver	Records if changes were made to RoutingNodes during an allocation round.
RoutingTable	Represents a global cluster-wide routing table for all indices including the version of the current routing state.
RoutingTable.Builder	Builder for the routing table.
RuleAction
RuleCondition
RuleCondition.AppliesTo
RuleScope
RuleScope.Builder
RunAutomaton	Finite-state automaton with fast run operation.
RunOnce	Runnable that can only be run one time.
S1Angle
S2
S2.Metric	Defines an area or a length cell metric.
S2CellId	An S2CellId is a 64-bit unsigned integer that uniquely identifies a cell in the S2 cell decomposition.
S2LatLng	This class represents a point on the unit sphere as a pair of latitude-longitude coordinates.
S2Point	An S2Point represents a point on the unit sphere as a 3D vector.
S2PrefixTree	Spatial prefix tree for S2 Geometry.
S2PrefixTree.Factory	Factory for creating S2PrefixTree instances with useful defaults
S2Projections	This class specifies the details of how the cube faces are projected onto the unit sphere.
S2Projections.Projections
S2ShapeFactory	Shape factory for Spatial contexts that support S2 geometry.
SafeCommitInfo	Information about the safe commit, for making decisions about recoveries.
SameShardAllocationDecider	An allocation decider that prevents multiple instances of the same shard to be allocated on the same node.
SameThreadExecutorService	An ExecutorService that executes tasks immediately in the calling thread during submit.
Sampler	A filter aggregation that defines a single bucket to hold a sample of top-matching documents.
SamplerAggregationBuilder
SamplerAggregator	Aggregate on only the top-scoring docs on a shard.
SamplerAggregator.ExecutionMode
SamplerAggregatorFactory
ScaledNoder	Wraps a Noder and transforms its input into the integer domain.
ScalingExecutorBuilder	A builder for scaling executors.
ScheduledEvent
Scheduler	Scheduler that allows to schedule one-shot and periodic commands.
Scheduler.Cancellable	This interface represents an object whose execution may be cancelled during runtime.
Scheduler.ReschedulingRunnable	This class encapsulates the scheduling of a Runnable that needs to be repeated on a interval.
Scheduler.SafeScheduledThreadPoolExecutor	This subclass ensures to properly bubble up Throwable instances of both type Error and Exception thrown in submitted/scheduled tasks to the uncaught exception handler
Scheduler.ScheduledCancellable	A scheduled cancellable allow cancelling and reading the remaining delay of a scheduled task.
Scope	A scope is a level of visibility that instances provided by Guice may have.
ScopeAnnotation	Annotates annotations which are used for scoping.
ScopeBinding	Registration of a scope annotation with the scope that implements it.
ScopedBindingBuilder	See the EDSL examples at Binder.
Scopes	Built-in scope implementations.
Scoping	References a scope, either directly (as a scope instance), or indirectly (as a scope annotation).
Scorable	Allows access to the score of a Query
Scorable.ChildScorable	A child Scorer and its relationship to its parent.
ScoreCachingWrappingScorer	A Scorer which wraps another scorer and caches the score of the current document.
ScoreDoc	Holds one hit in TopDocs.
ScoreFetchSubPhase
ScoreFunction
ScoreFunctionBuilder<FB extends ScoreFunctionBuilder<FB>>
ScoreFunctionParser<FB extends ScoreFunctionBuilder<FB>>	Parses XContent into a ScoreFunctionBuilder.
ScoreMode	How to aggregate multiple child hit scores into a single parent score.
ScoreMode	Different modes of search.
ScoreOrderFragmentsBuilder	An implementation of FragmentsBuilder that outputs score-order fragments.
ScoreOrderFragmentsBuilder.ScoreComparator	Comparator for FieldFragList.WeightedFragInfo by boost, breaking ties by offset.
Scorer	A Scorer is responsible for scoring a stream of tokens.
Scorer	Expert: Common scoring functionality for different types of queries.
ScorerAware
ScorerSupplier	A supplier of Scorer.
ScoreScript	A script used for adjusting the score on a per document basis.
ScoreScript.ExplanationHolder	A helper to take in an explanation from a script and turn it into an Explanation
ScoreScript.Factory	A factory to construct stateful ScoreScript factories for a specific index.
ScoreScript.LeafFactory	A factory to construct ScoreScript instances.
ScoreSortBuilder	A sort builder allowing to sort by score.
ScoringRewrite<B>	Base rewrite method that translates each term into a query, and keeps the scores as computed by the query.
Script	Script represents used-defined input that can be used to compile and execute a script from the ScriptService based on the ScriptType.
ScriptBytesValues	SortedBinaryDocValues implementation that reads values from a script.
ScriptContext<FactoryType>	The information necessary to compile and run a script.
ScriptDocValues<T>	Script level doc values, the assumption is that any implementation will implement a getValue method.
ScriptDocValues.Booleans
ScriptDocValues.BytesRefs
ScriptDocValues.Dates
ScriptDocValues.Doubles
ScriptDocValues.GeoPoints
ScriptDocValues.Longs
ScriptDocValues.Strings
ScriptDoubleValues	SortingNumericDoubleValues implementation which is based on a script
ScriptedMetric	A metric aggregation that computes both its final and intermediate states using scripts.
ScriptedMetricAggContexts
ScriptedMetricAggContexts.CombineScript
ScriptedMetricAggContexts.CombineScript.Factory
ScriptedMetricAggContexts.InitScript
ScriptedMetricAggContexts.InitScript.Factory
ScriptedMetricAggContexts.MapScript
ScriptedMetricAggContexts.MapScript.Factory
ScriptedMetricAggContexts.MapScript.LeafFactory
ScriptedMetricAggContexts.ReduceScript
ScriptedMetricAggContexts.ReduceScript.Factory
ScriptedMetricAggregationBuilder
ScriptedSimilarity	A Similarity implementation that allows scores to be scripted.
ScriptedSimilarity.Doc	Statistics that are specific to a document.
ScriptedSimilarity.Field	Statistics that are specific to a given field.
ScriptedSimilarity.Query	Scoring factors that come from the query.
ScriptedSimilarity.Term	Statistics that are specific to a given term.
ScriptEngine	A script language implementation.
ScriptException	Exception from a scripting engine.
ScriptFieldsContext
ScriptFieldsContext.ScriptField
ScriptFieldsFetchSubPhase
ScriptHeuristic
ScriptLongValues	LongValues implementation which is based on a script
ScriptMetaData	ScriptMetaData is used to store user-defined scripts as part of the ClusterState using only an id as the key.
ScriptMetaData.Builder	A builder used to modify the currently stored scripts data held within the ClusterState.
ScriptMetrics
ScriptModule	Manages building ScriptService.
ScriptPlugin	An additional extension point for Plugins that extends Elasticsearch's scripting functionality.
ScriptQueryBuilder
ScriptScoreFunction
ScriptScoreFunctionBuilder	A function that uses a script to compute or influence the score of documents that match with the inner query or filter.
ScriptScoreQuery	A query that uses a script to compute documents' scores.
ScriptScoreQueryBuilder	A query that computes a document score based on the provided script
ScriptService
ScriptSortBuilder	Script sort builder allows to sort based on a custom script expression.
ScriptSortBuilder.ScriptSortType
ScriptStats
ScriptType	ScriptType represents the way a script is stored and retrieved from the ScriptService.
Scroll	A scroll enables scrolling of search request.
ScrollableHitSource	A scrollable source of results.
ScrollableHitSource.AsyncResponse
ScrollableHitSource.BasicHit	An implementation of ScrollableHitSource.Hit that uses getters and setters.
ScrollableHitSource.Hit	A document returned as part of the response.
ScrollableHitSource.Response	Response from each scroll batch.
ScrollableHitSource.SearchFailure	A failure during search.
ScrollContext	Wrapper around information that needs to stay around when scrolling.
ScrollQueryFetchSearchResult
ScrollQuerySearchResult
SearchAction
SearchAfterBuilder
SearchAfterSortedDocQuery	A Query that only matches documents that are greater than the provided FieldDoc.
SearchContext	This class encapsulates the state needed to execute a search.
SearchContext.Lifetime	The life time of an object that is used during search execution.
SearchContextAggregations	The aggregation context that is part of the search context.
SearchContextHighlight
SearchContextHighlight.Field
SearchContextHighlight.FieldOptions
SearchContextMissingException
SearcherFactory	Factory class used by SearcherManager to create new IndexSearchers.
SearcherManager	Utility class to safely share IndexSearcher instances across multiple threads, while periodically reopening.
SearchException
SearchExecutionStatsCollector	A wrapper of search action listeners (search results) that unwraps the query result to get the piggybacked queue size and service time EWMA, adding those values to the coordinating nodes' ResponseCollectorService.
SearchExtBuilder	Intermediate serializable representation of a search ext section.
SearchGroup<T>	Represents a group that is found during the first pass search.
SearchHit	A single search hit.
SearchHit.Fields
SearchHit.NestedIdentity	Encapsulates the nested identity of a hit.
SearchHits
SearchHits.Fields
SearchIndexNameMatcher	A predicate that checks whether an index pattern matches the current search shard target.
SearchLookup
SearchModule	Sets up things that can be done at search time like queries, aggregations, and suggesters.
SearchOperationListener	An listener for search, fetch and context events.
SearchOperationListener.CompositeListener	A Composite listener that multiplexes calls to each of the listeners methods.
SearchParseException
SearchPhase	Represents a phase of a search request e.g.
SearchPhase.SearchContextSourcePrinter
SearchPhaseController
SearchPhaseController.ReducedQueryPhase
SearchPhaseExecutionException
SearchPhaseResult	This class is a base class for all search related results.
SearchPlugin	Plugin for extending search time behavior.
SearchPlugin.AggregationSpec	Specification for an Aggregation.
SearchPlugin.FetchPhaseConstructionContext	Context available during fetch phase construction.
SearchPlugin.PipelineAggregationSpec	Specification for a PipelineAggregator.
SearchPlugin.QuerySpec<T extends QueryBuilder>	Specification of custom Query.
SearchPlugin.RescorerSpec<T extends RescorerBuilder<T>>
SearchPlugin.ScoreFunctionSpec<T extends ScoreFunctionBuilder<T>>	Specification of custom ScoreFunction.
SearchPlugin.SearchExtensionSpec<W extends NamedWriteable,P>	Specification of search time behavior extension like a custom MovAvgModel or ScoreFunction.
SearchPlugin.SearchExtSpec<T extends SearchExtBuilder>	Specification for a SearchExtBuilder which represents an additional section that can be parsed in a search request (within the ext element).
SearchPlugin.SuggesterSpec<T extends SuggestionBuilder<T>>	Specification for a Suggester.
SearchProfileShardResults	A container class to hold all the profile results across all shards.
SearchRequest	A request to execute search against one or more indices (or all).
SearchRequestBuilder	A search action request builder.
SearchResponse	A response of a search request.
SearchResponse.Clusters	Holds info about the clusters that the search was executed on: how many in total, how many of them were successful and how many of them were skipped.
SearchResponseSections	Base class that holds the various sections which a search response is composed of (hits, aggs, suggestions etc.) and allows to retrieve them.
SearchScrollAction
SearchScrollRequest
SearchScrollRequestBuilder	A search scroll action request builder.
SearchService
SearchService.CanMatchResponse
SearchShardIterator	Extension of PlainShardIterator used in the search api, which also holds the OriginalIndices of the search request (useful especially with cross-cluster search, as each cluster has its own set of original indices) as well as the cluster alias.
SearchShardTarget	The target that the search request was executed on.
SearchSlowLog
SearchSortValues
SearchSourceBuilder	A search source builder allowing to easily build search source.
SearchSourceBuilder.IndexBoost
SearchSourceBuilder.ScriptField
SearchSourceBuilderException
SearchStats
SearchStats.Stats
SearchTask	Task storing information about a currently running search request.
SearchTemplateAction
SearchTemplateRequest	A request to execute a search based on a search template.
SearchTemplateRequestBuilder
SearchTemplateResponse
SearchTransportService	An encapsulation of SearchService operations exposed through transport.
SearchTransportService.SearchFreeContextResponse
SearchType	Search type represent the manner at which the search operation is executed.
SecureSetting<T>	A secure setting.
SecureSettings	An accessor for settings which are securely stored.
SecureString	A String implementations which allows clearing the underlying char array.
SecurityClient	A wrapper for the RestHighLevelClient that provides methods for accessing the Security APIs.
SecurityNodesResponse	Base class for security responses that are node responses.
SecurityNodesResponse.Node
SeedHostsProvider	A pluggable provider of the list of seed hosts to use for discovery.
SeedHostsProvider.HostsResolver	Helper object that allows to resolve a list of hosts to a list of transport addresses.
SeedHostsResolver
Segment
SegmentCacheable	Interface defining whether or not an object can be cached against a LeafReader Objects that depend only on segment-immutable structures such as Points or postings lists can just return true from SegmentCacheable.isCacheable(LeafReaderContext) Objects that depend on doc values should return DocValues.isCacheable(LeafReaderContext, String...), which will check to see if the doc values fields have been updated.
SegmentCommitInfo	Embeds a [read-only] SegmentInfo and adds per-commit fields.
SegmentInfo	Information about a segment such as its name, directory, and files related to the segment.
SegmentInfoFormat	Expert: Controls the format of the SegmentInfo (segment metadata file).
SegmentInfos	A collection of segmentInfo objects with methods for operating on those segments in relation to the file system.
SegmentInfos.FindSegmentsFile<T>	Utility class for executing code that needs to do something with the current segments file.
SegmentIntersectionDetector	Detects and records an intersection between two SegmentStrings, if one exists.
SegmentIntersector	Computes the intersection of line segments, and adds the intersection to the edges containing the segments.
SegmentIntersector	Processes possible intersections detected by a Noder.
SegmentNode	Represents an intersection point between two SegmentStrings.
SegmentNodeList	A list of the SegmentNodes present along a noded SegmentString.
SegmentPointComparator	Implements a robust method of comparing the relative position of two points along the same segment.
SegmentReader	IndexReader implementation over a single segment.
SegmentReadState	Holder class for common parameters used during read.
SegmentSetMutualIntersector	An intersector for the red-blue intersection problem.
SegmentsStats
SegmentString	An interface for classes which represent a sequence of contiguous line segments.
SegmentStringUtil	Utility methods for processing SegmentStrings.
SegmentWriteState	Holder class for common parameters used during write.
Selector	An implementation of a selection algorithm, ie.
SendRequestTransportException
SentinelIntSet	A native int hash-based set where one value is reserved to mean "EMPTY" internally.
SeqNoFieldMapper	Mapper for the _seq_no field.
SeqNoFieldMapper.Builder
SeqNoFieldMapper.SeqNoDefaults
SeqNoFieldMapper.SequenceIDFields	A sequence ID, which is made up of a sequence number (both the searchable and doc_value version of the field) and the primary term.
SeqNoFieldMapper.TypeParser
SeqNoPrimaryTermFetchSubPhase
SeqNoStats
SequenceNumbers	A utility class for handling sequence numbers.
SequenceNumbers.CommitInfo
SerialDiffPipelineAggregationBuilder
SerialDiffPipelineAggregator
SetBackedScalingCuckooFilter	An approximate set membership datastructure that scales as more unique values are inserted.
SetKeywordMarkerFilter	Marks terms as keywords via the KeywordAttribute.
SetOnce<T>	A convenient class which offers a semi-immutable object wrapper implementation which allows one to set the value of an object exactly once, and retrieve it many times.
SetOnce.AlreadySetException	Thrown when SetOnce.set(Object) is called more than once.
SetPriorityAction	A LifecycleAction which sets the index's priority.
Sets
Setting<T>	A setting.
Setting.AffixKey	A key that allows for static pre and suffix.
Setting.AffixSetting<T>
Setting.GroupKey
Setting.Key
Setting.ListKey
Setting.Property
Setting.SimpleKey
Setting.Validator<T>	Represents a validator for a setting.
Settings	An immutable settings implementation.
Settings.Builder	A builder allowing to put different settings and then Settings.Builder.build() an immutable settings implementation.
SettingsBasedSeedHostsProvider	An implementation of SeedHostsProvider that reads hosts/ports from the "discovery.seed_hosts" node setting.
SettingsException	A generic failure to handle settings.
SettingsFilter	A class that allows to filter settings objects by simple regular expression patterns or full settings keys.
SettingsModule	A module that binds the provided settings to the Settings interface.
SettingUpgrader<T>	Represents the logic to upgrade a setting.
SetUpgradeModeRequest	Sets ML into upgrade_mode
SetUserEnabledRequest	Abstract request object to enable or disable a built-in or native user.
Shape	The base interface defining a geometric shape.
ShapeBuilder<T extends Shape,G extends Geometry,E extends ShapeBuilder<T,G,E>>	Basic class for building GeoJSON shapes like Polygons, Linestrings, etc
ShapeBuilder.Edge	This helper class implements a linked list for Coordinate.
ShapeBuilder.Orientation
ShapeCollection<S extends Shape>	A collection of Shape objects, analogous to an OGC GeometryCollection.
ShapeFactory	A factory for Shapes.
ShapeFactory.LineStringBuilder
ShapeFactory.MultiLineStringBuilder
ShapeFactory.MultiPointBuilder
ShapeFactory.MultiPolygonBuilder
ShapeFactory.MultiShapeBuilder<T extends Shape>
ShapeFactory.PointsBuilder<T>	Builds a point and returns the generic specified type (usually whatever "this" is).
ShapeFactory.PolygonBuilder
ShapeFactory.PolygonBuilder.HoleBuilder
ShapeFactoryImpl	The default ShapeFactory.
ShapeField	A base shape utility class used for both LatLon (spherical) and XY (cartesian) shape fields.
ShapeField.DecodedTriangle	Represents a encoded triangle using ShapeField.decodeTriangle(byte[], DecodedTriangle).
ShapeField.QueryRelation	Query Relation Types
ShapeField.Triangle	polygons are decomposed into tessellated triangles using Tessellator these triangles are encoded and inserted as separate indexed POINT fields
ShapeFieldCache<T extends Shape>	Bounded Cache of Shapes associated with docIds.
ShapeFieldCacheDistanceValueSource	A DoubleValuesSource that returns the spatial distance between an input point and a document's points in ShapeFieldCacheProvider.
ShapeFieldCacheProvider<T extends Shape>	Provides access to a ShapeFieldCache for a given LeafReader.
ShapeIO
ShapeParser	first point of entry for a shape parser
ShapeReader	Implementations are expected to be thread safe
ShapeRelation	Enum representing the relationship between a Query / Filter Shape and indexed Shapes that will be used to determine if a Document should be matched or not
ShapesAvailability
ShapeType	Shape types supported by elasticsearch
ShapeWriter	Implementations are expected to be thread safe
ShardAllocationDecision	Represents the decision taken for the allocation of a single shard.
ShardBitsetFilterCache
ShardCoreKeyMap	A map between segment core cache keys and the shard that these segments belong to.
ShardFetchRequest	Shard level fetch base request.
ShardFetchSearchRequest	Shard level fetch request used with search.
ShardFieldData
ShardFlushRequest
ShardGetService
ShardId	Allows for shard level components to be injected with the shard id.
ShardIndexWarmerService
ShardIterator	Allows to iterate over a set of shard instances (routing) within a shard id group.
ShardLock	A shard lock guarantees exclusive access to a shards data directory.
ShardLockObtainFailedException	Exception used when the in-memory lock for a shard cannot be obtained
ShardNotFoundException
ShardNotInPrimaryModeException
ShardOperationFailedException	An exception indicating that a failure occurred performing an operation on the shard.
ShardPath
ShardRequestCache	Tracks the portion of the request cache in use for a particular shard.
ShardRouting	ShardRouting immutably encapsulates information about shard indexRoutings like id, state, version, etc.
ShardRoutingState	Represents the current state of a ShardRouting as defined by the cluster.
ShardsAcknowledgedResponse
ShardsAcknowledgedResponse
ShardsAllocator	A ShardsAllocator is the main entry point for shard allocation on nodes in the cluster.
ShardSearchFailure	Represents a failure to search on a specific shard.
ShardSearchRequest	Shard level request that represents a search.
ShardSearchStats
ShardSegments
ShardShuffler	A shuffler for shards whose primary goal is to balance load.
ShardsIterator	Allows to iterate over unrelated shards.
ShardsLimitAllocationDecider	This AllocationDecider limits the number of shards per node on a per index or node-wide basis.
ShardsSyncedFlushResult	Result for all copies of a shard
ShardStateAction
ShardStateAction.FailedShardEntry
ShardStateAction.NoLongerPrimaryShardException
ShardStateAction.ShardFailedClusterStateTaskExecutor
ShardStateAction.ShardStartedClusterStateTaskExecutor
ShardStateAction.StartedShardEntry
ShardStateMetaData
ShardStats
ShardUpgradeStatus
ShardUtils
ShardValidateQueryRequest	Internal validate request executed directly against a specific index shard.
ShingleFilter	A ShingleFilter constructs shingles (token n-grams) from a token stream.
ShingleTokenFilterFactory
ShingleTokenFilterFactory.Factory
ShortCircuitedGeometryVisitor	A visitor to Geometry components, which allows short-circuiting when a defined condition holds.
ShrinkAction
ShrinkAction
SiblingPipelineAggregator
SignificanceHeuristic	Heuristic for that SignificantTerms uses to pick out significant terms.
SignificanceHeuristicBuilder
SignificanceHeuristicParser	Parses SignificanceHeuristics from an XContentParser.
SignificantLongTerms	Result of the running the significant terms aggregation on a numeric field.
SignificantLongTermsAggregator
SignificantStringTerms	Result of the running the significant terms aggregation on a String field.
SignificantStringTerms.Bucket
SignificantStringTermsAggregator	An aggregator of significant string values.
SignificantTerms	An aggregation that collects significant terms in comparison to a background set.
SignificantTerms.Bucket
SignificantTermsAggregationBuilder
SignificantTermsAggregatorFactory
SignificantTermsAggregatorFactory.ExecutionMode
SignificantTermsHeuristicScoreScript	A script used in significant terms heuristic scoring.
SignificantTermsHeuristicScoreScript.Factory
SignificantTextAggregationBuilder
SignificantTextAggregator
SignificantTextAggregatorFactory
Similarity	Similarity defines the components of Lucene scoring.
Similarity.SimScorer	Stores the weight for a query across the indexed collection.
SimilarityBase	A subclass of Similarity that provides a simplified API for its descendants.
SimilarityProvider	Wrapper around a Similarity and its name.
SimilarityScript	A script that is used to build ScriptedSimilarity instances.
SimilarityScript.Factory
SimilarityService
SimilarityWeightScript	A script that is used to compute scoring factors that are the same for all documents.
SimilarityWeightScript.Factory
SimpleAnalyzer	An Analyzer that filters LetterTokenizer with LowerCaseFilter
SimpleAnalyzerProvider
SimpleBoundaryScanner	Simple boundary scanner implementation that divides fragments based on a set of separator characters.
SimpleCollector	Base Collector implementation that is used to collect all contexts.
SimpleFieldComparator<T>	Base FieldComparator implementation that is used for all contexts.
SimpleFieldFragList	A simple implementation of FieldFragList.
SimpleFragListBuilder	A simple implementation of FragListBuilder.
SimpleFragmenter	Fragmenter implementation which breaks text up into same-size fragments with no concerns over spotting sentence boundaries.
SimpleFragmentsBuilder	A simple implementation of FragmentsBuilder.
SimpleFragmentsBuilder	Direct Subclass of Lucene's org.apache.lucene.search.vectorhighlight.SimpleFragmentsBuilder that corrects offsets for broken analysis chains.
SimpleFSDirectory	A straightforward implementation of FSDirectory using Files.newByteChannel(Path, java.nio.file.OpenOption...).
SimpleFSLockFactory	Implements LockFactory using Files.createFile(java.nio.file.Path, java.nio.file.attribute.FileAttribute<?>...).
SimpleHTMLEncoder	Simple Encoder implementation to escape text for HTML output
SimpleHTMLFormatter	Simple Formatter implementation to highlight terms with a pre and post tag.
SimpleMappedFieldType	MappedFieldType base impl for field types that are neither dates nor ranges.
SimpleMCSweepLineIntersector	Finds all intersections in one or two sets of edges, using an x-axis sweepline algorithm in conjunction with Monotone Chains.
SimpleModel	Calculate a simple unweighted (arithmetic) moving average
SimpleModel.SimpleModelBuilder
SimplePointInAreaLocator	Computes the location of points relative to a Polygonal Geometry, using a simple O(n) algorithm.
SimpleQueryParser	SimpleQueryParser is used to parse human readable query syntax.
SimpleQueryStringBuilder	SimpleQuery is a query parser that acts similar to a query_string query, but won't throw exceptions for any weird string syntax.
SimpleQueryStringFlag	Flags for the XSimpleQueryString parser
SimpleQueryStringQueryParser	Wrapper class for Lucene's SimpleQueryStringQueryParser that allows us to redefine different types of queries.
SimpleQueryStringQueryParser.Settings	Class encapsulating the settings for the SimpleQueryString query, with their default values
SimpleSpanFragmenter	Fragmenter implementation which breaks text up into same-size fragments but does not split up Spans.
SimpleStats	Helper class for min, max, avg and total statistics for a quantity
SimpleValue
SimulatedAnealingMinimizer	A cost minimizer which will fit a MovAvgModel to the data.
SimulateDocumentBaseResult	Holds the end result of what a pipeline did to sample document provided via the simulate api.
SimulateDocumentResult
SimulateDocumentVerboseResult	Holds the result of what a pipeline did to a sample document via the simulate api, but instead of SimulateDocumentBaseResult this result class holds the intermediate result each processor did to the sample document.
SimulatePipelineAction
SimulatePipelineRequest
SimulatePipelineRequest.Fields
SimulatePipelineRequestBuilder
SimulatePipelineResponse
SimulatePipelineTransportAction
SimulateProcessorResult
SingleBucketAggregation	A single bucket aggregation
SingleBucketAggregator	A bucket aggregator that doesn't create new buckets.
SingleFieldsVisitor	StoredFieldVisitor that loads a single field value.
SingleFragListBuilder	An implementation class of FragListBuilder that generates one FieldFragList.WeightedFragInfo object.
SingleGroupSource
SingleGroupSource.Type
SingleInstanceLockFactory	Implements LockFactory for a single in-process instance, meaning all locking will take place through this one instance.
SingleObjectCache<T>	A very simple single object cache that allows non-blocking refresh calls triggered by expiry time.
SinglePackedOrdinals
SinglePassNoder	Base class for Noders which make a single pass to find intersections.
SingleShardOperationRequestBuilder<Request extends SingleShardRequest<Request>,Response extends ActionResponse,RequestBuilder extends SingleShardOperationRequestBuilder<Request,Response,RequestBuilder>>
SingleShardRequest<Request extends SingleShardRequest<Request>>
SingleTermsEnum	Subclass of FilteredTermsEnum for enumerating a single term.
Singleton	Apply this to implementation classes when you want only one instance (per Injector) to be reused for all injections for that binding.
SizeBlockingQueue<E>	A size based queue wrapping another blocking queue to provide (somewhat relaxed) capacity checks.
SizeUnit
SizeValue
SliceBuilder	A slice builder allowing to split a scroll in multiple partitions.
SlicedInputStream	A SlicedInputStream is a logical concatenation one or more input streams.
SliceQuery	An abstract Query that defines an hash function to partition the documents in multiple slices.
SloppyMath	Math functions that trade off accuracy for speed.
SlowImpactsEnum	ImpactsEnum that doesn't index impacts but implements the API in a legal way.
SlowLogLevel
SmallFloat	Floating point numbers smaller than 32 bits.
SmoothingModel
SnapIfNeededOverlayOp	Performs an overlay operation using snapping and enhanced precision to improve the robustness of the result.
SnapOverlayOp	Performs an overlay operation using snapping and enhanced precision to improve the robustness of the result.
Snapshot	Basic information about a snapshot - a SnapshotId and the repository that the snapshot belongs to.
SnapshotClient	A wrapper for the RestHighLevelClient that provides methods for accessing the Snapshot API.
SnapshotCreationException	Thrown when snapshot creation fails completely
SnapshotDeletionsInProgress	A class that represents the snapshot deletions that are in progress in the cluster.
SnapshotDeletionsInProgress.Entry	A class representing a snapshot deletion request entry in the cluster state.
SnapshotException	Generic snapshot exception
SnapshotFailedEngineException
SnapshotFiles	Contains a list of files participating in a snapshot
SnapshotId	SnapshotId - snapshot name + snapshot UUID
SnapshotIndexShardStage
SnapshotIndexShardStatus
SnapshotIndexStatus	Represents snapshot status of all shards in the index
SnapshotInfo	Information about a snapshot
SnapshotInfo.SnapshotInfoBuilder
SnapshotInProgressAllocationDecider	This AllocationDecider prevents shards that are currently been snapshotted to be moved to other nodes.
SnapshotInProgressException	Thrown on the attempt to execute an action that requires that no snapshot is in progress.
SnapshotInvocationRecord
SnapshotLifecycleManagementStatusRequest
SnapshotLifecyclePolicy
SnapshotLifecyclePolicyMetadata
SnapshotLifecyclePolicyMetadata.SnapshotInProgress
SnapshotLifecycleStats
SnapshotLifecycleStats.SnapshotPolicyStats
SnapshotMissingException	Thrown if requested snapshot doesn't exist
SnapshotRestoreException	Snapshot restore exception
SnapshotRetentionConfiguration
SnapshotShardFailure	Stores information about failures that occurred during shard snapshotting process
SnapshotShardsService	This service runs on data and master nodes and controls currently snapshotted shards on these nodes.
SnapshotShardsService.UpdateIndexShardSnapshotStatusRequest	Internal request that is used to send changes in snapshot status to master
SnapshotShardsStats	Status of a snapshot shards
SnapshotsInProgress	Meta data about snapshots that are currently executing
SnapshotsInProgress.Entry
SnapshotsInProgress.ShardSnapshotStatus
SnapshotsInProgress.ShardState
SnapshotsInProgress.State
SnapshotsService	Service responsible for creating snapshots
SnapshotsStatusAction	Snapshots status action
SnapshotsStatusRequest	Get snapshot status request
SnapshotsStatusRequestBuilder	Snapshots status request builder
SnapshotsStatusResponse	Snapshot status response
SnapshotState	Represents the state that a snapshot can be in
SnapshotStats
SnapshotStatus	Status of a snapshot
SnapshotUtils	Snapshot utilities
Snippet	Represents a scored highlighted snippet.
SoftDeletesDirectoryReaderWrapper	This reader filters out documents that have a doc values value in the given field and treat these documents as soft deleted.
SoftDeletesRetentionMergePolicy	This MergePolicy allows to carry over soft deleted documents across merges.
Sort	Static sorting methods
Sort	Encapsulates sort criteria for returned hits.
SortAndFormats
SortBuilder<T extends SortBuilder<T>>
SortBuilders	A set of static factory methods for SortBuilders.
SortBy	An enum representing the valid sorting options
SortedBinaryDocValues	A list of per-document binary values, sorted according to BytesRef.compareTo(BytesRef).
SortedDocValues	A per-document byte[] with presorted values.
SortedDocValuesField	Field that stores a per-document BytesRef value, indexed for sorting.
SortedNumericDocValues	A list of per-document numeric values, sorted according to Long.compare(long, long).
SortedNumericDocValuesField	Field that stores a per-document long values for scoring, sorting or value retrieval.
SortedNumericDoubleValues	Clone of SortedNumericDocValues for double values.
SortedNumericDVIndexFieldData	FieldData backed by LeafReader.getSortedNumericDocValues(String)
SortedNumericSelector	Selects a value from the document's list to use as the representative value
SortedNumericSelector.Type	Type of selection to perform.
SortedNumericSortField	SortField for SortedNumericDocValues.
SortedPackedIntervalRTree	A static index on a set of 1-dimensional intervals, using an R-Tree packed based on the order of the interval midpoints.
SortedSetDocValues	A multi-valued version of SortedDocValues.
SortedSetDocValuesField	Field that stores a set of per-document BytesRef values, indexed for faceting,grouping,joining.
SortedSetDVBytesAtomicFieldData	An AtomicFieldData implementation that uses Lucene SortedSetDocValues.
SortedSetDVOrdinalsIndexFieldData
SortedSetSelector	Selects a value from the document's set to use as the representative value
SortedSetSelector.Type	Type of selection to perform.
SortedSetSortField	SortField for SortedSetDocValues.
Sorter	Base class for sorting algorithms implementations.
SortField	Stores information about how to sort documents by terms in an individual field.
SortField.Type	Specifies the type of the terms to be sorted, or special types such as CUSTOM
SortFieldAndFormat
SortingBinaryDocValues	Base class for building SortedBinaryDocValues instances based on unsorted content.
SortingNumericDocValues	Base class for building SortedNumericDocValues instances based on unsorted content.
SortingNumericDoubleValues	Base class for building SortedNumericDoubleValues instances based on unsorted content.
SortMode	Elasticsearch supports sorting by array or multi-valued fields.
SortOrder	A sorting order.
SourceConfig	Class encapsulating all options for a TransformConfig gathering data
SourceConfig.Builder
SourceFieldMapper
SourceFieldMapper.Builder
SourceFieldMapper.Defaults
SourceFieldMapper.TypeParser
SourceLookup
SourcePrioritizedRunnable	PrioritizedRunnable that also has a source string
SourceProvider	Provides access to the calling line of code.
SourceScoreOrderFragmentsBuilder
SourceSimpleFragmentsBuilder
SourceToParse
SourceToParse.Origin
SpanBooleanQueryRewriteWithMaxClause	A span rewrite method that extracts the first maxExpansions terms that match the MultiTermQuery in the terms dictionary.
SpanBoostQuery	Counterpart of BoostQuery for spans.
SpanCollector	An interface defining the collection of postings information from the leaves of a Spans
SpanContainingQuery	Keep matches that contain another SpanScorer.
SpanContainingQueryBuilder	Builder for SpanContainingQuery.
SpanFirstQuery	Matches spans near the beginning of a field.
SpanFirstQueryBuilder
SpanMatchNoDocsQuery	A SpanQuery that matches no documents.
SpanMultiTermQueryBuilder	Query that allows wrapping a MultiTermQueryBuilder (one of wildcard, fuzzy, prefix, term, range or regexp query) as a SpanQueryBuilder so it can be nested.
SpanMultiTermQueryWrapper<Q extends MultiTermQuery>	Wraps any MultiTermQuery as a SpanQuery, so it can be nested within other SpanQuery classes.
SpanMultiTermQueryWrapper.SpanRewriteMethod	Abstract class that defines how the query is rewritten.
SpanMultiTermQueryWrapper.TopTermsSpanBooleanQueryRewrite	A rewrite method that first translates each term into a SpanTermQuery in a BooleanClause.Occur.SHOULD clause in a BooleanQuery, and keeps the scores as computed by the query.
SpanNearQuery	Matches spans which are near one another.
SpanNearQuery.Builder	A builder for SpanNearQueries
SpanNearQueryBuilder	Matches spans which are near one another.
SpanNearQueryBuilder.SpanGapQueryBuilder	SpanGapQueryBuilder enables gaps in a SpanNearQuery.
SpanNotQuery	Removes matches which overlap with another SpanQuery or which are within x tokens before or y tokens after another SpanQuery.
SpanNotQueryBuilder
SpanOrQuery	Matches the union of its clauses.
SpanOrQueryBuilder	Span query that matches the union of its clauses.
SpanPositionCheckQuery	Base class for filtering a SpanQuery based on the position of a match.
SpanPositionRangeQuery	Checks to see if the SpanPositionCheckQuery.getMatch() lies between a start and end position See SpanFirstQuery for a derivation that is optimized for the case where start position is 0.
SpanQuery	Base class for span-based queries.
SpanQueryBuilder	Marker interface for a specific type of QueryBuilder that allows to build span queries.
SpanQueryBuilder.SpanQueryBuilderUtil
Spans	Iterates through combinations of start/end positions per-doc.
SpanScorer	A basic Scorer over Spans.
SpanTermQuery	Matches spans containing a term.
SpanTermQueryBuilder	A Span Query that matches documents containing a term.
SpanWeight	Expert-only.
SpanWeight.Postings	Enumeration defining what postings information should be retrieved from the index for a given Spans
SpanWithinQuery	Keep matches that are contained within another Spans.
SpanWithinQueryBuilder	Builder for SpanWithinQuery.
SparseFixedBitSet	A bit set that only stores longs that have at least one bit which is set.
SpatialArgs	Principally holds the query Shape and the SpatialOperation.
SpatialArgsParser	Parses a string that usually looks like "OPERATION(SHAPE)" into a SpatialArgs object.
SpatialContext	This is a facade to most of Spatial4j, holding things like DistanceCalculator, ShapeFactory, ShapeIO.
SpatialContextFactory	Factory for a SpatialContext based on configuration data.
SpatialIndex	The basic operations supported by classes implementing spatial index algorithms.
SpatialOperation	A predicate that compares a stored geometry to a supplied geometry.
SpatialPrefixTree	A spatial Prefix Tree, or Trie, which decomposes shapes into prefixed strings at variable lengths corresponding to variable precision.
SpatialPrefixTreeFactory	Abstract Factory for creating SpatialPrefixTree instances with useful defaults and passed on configurations defined in a Map.
SpatialRelation	The set of spatial relationships.
SpatialStrategy	The SpatialStrategy encapsulates an approach to indexing and searching based on shapes.
SpatialStrategy
SpellChecker	Spell Checker class (Main class). (initially inspired by the David Spencer code).
SPIClassIterator<S>	Helper class for loading SPI classes from classpath (META-INF files).
SplittingBreakIterator	Virtually slices the text on both sides of every occurrence of the specified character.
StackTraceElements	Creates stack trace elements for members.
Stage	The stage we're running in.
StaleShard	A class that represents a stale shard copy.
StandardAnalyzer	Filters StandardTokenizer with LowerCaseFilter and StopFilter, using a configurable list of stop words.
StandardAnalyzerProvider
StandardDirectoryReader	Default implementation of DirectoryReader.
StandardTokenizer	A grammar-based tokenizer constructed with JFlex.
StandardTokenizerFactory
StandardTokenizerImpl	This class implements Word Break rules from the Unicode Text Segmentation algorithm, as specified in Unicode Standard Annex #29.
StandardValidator	Validator that only checks that altitude only shows up if ignoreZValue is set to true.
StartBasicRequest
StartBasicResponse
StartBasicResponse.Status
StartDatafeedRequest	Request to start a Datafeed
StartDatafeedResponse	Response indicating if the Machine Learning Datafeed is now started or not
StartDataFrameAnalyticsRequest
StartILMRequest
StartJoinRequest	Represents the action of requesting a join vote (see Join) from a node.
StartPersistentTaskAction	This action can be used to add the record for the persistent action to the cluster state.
StartPersistentTaskAction.Request
StartPersistentTaskAction.RequestBuilder
StartPersistentTaskAction.TransportAction
StartRecoveryRequest	Represents a request for starting a peer recovery.
StartRollupJobRequest
StartRollupJobResponse
StartSLMRequest
StartTransformRequest
StartTransformResponse
StartTrialRequest
StartTrialResponse
StartWatchServiceRequest
StatePair	Pair of states.
StaticInjectionRequest	A request to inject the static fields and methods of a type.
Stats	BlockTree statistics for a single field returned by FieldReader.getStats().
Stats	Statistics over a set of values (either aggregated over field data or scripts)
StatsAggregationBuilder
StatsBucket	Statistics over a set of buckets
StatsBucketPipelineAggregationBuilder
StatsBucketPipelineAggregator
StatsRequest
StatsResponse
StatsResponse.CoordinatorStats
StatsResponse.ExecutingPolicy
StatusToXContentObject	Objects that can both render themselves in as json/yaml/etc and can provide a RestStatus for their response.
StepListener<Response>	A StepListener provides a simple way to write a flow consisting of multiple asynchronous steps without having nested callbacks.
StopAnalyzer	Filters LetterTokenizer with LowerCaseFilter and StopFilter.
StopAnalyzerProvider
StopDatafeedRequest	Request to stop Machine Learning Datafeeds
StopDatafeedResponse	Response indicating if the Machine Learning Datafeed is now stopped or not
StopDataFrameAnalyticsRequest
StopDataFrameAnalyticsResponse	Response indicating if the Machine Learning Data Frame Analytics is now stopped or not
StopFilter	Removes stop words from a token stream.
StopILMRequest
StopRollupJobRequest
StopRollupJobResponse
StopSLMRequest
StopTokenFilterFactory
StopTransformRequest
StopTransformResponse
Stopwatch	Enables simple performance monitoring.
StopWatch	Simple stop watch, allowing for timing of a number of tasks, exposing total running time and running time for each named task.
StopWatch.TaskInfo	Inner class to hold data about one task executed within the stop watch.
StopWatchServiceRequest
StopwordAnalyzerBase	Base class for Analyzers that need to make use of stopword sets.
Store	A Store provides plain access to files written by an elasticsearch index shard.
Store.MetadataSnapshot	Represents a snapshot of the current directory build from the latest Lucene commit.
Store.OnClose	A listener that is executed once the store is closed and all references to it are released
Store.RecoveryDiff	A class representing the diff between a recovery source and recovery target
StoredField	A field whose value is stored so that IndexSearcher.doc(int) and IndexReader.document() will return the field and its value.
StoredFieldsContext	Context used to fetch the stored_fields.
StoredFieldsFormat	Controls the format of stored fields
StoredFieldsReader	Codec API for reading stored fields.
StoredFieldsWriter	Codec API for writing stored fields: For every document, StoredFieldsWriter.startDocument() is called, informing the Codec that a new document has started.
StoredFieldVisitor	Expert: provides a low-level means of accessing the stored field values in an index.
StoredFieldVisitor.Status	Enumeration of possible return values for StoredFieldVisitor.needsField(org.apache.lucene.index.FieldInfo).
StoredScriptSource	StoredScriptSource represents user-defined parameters for a script saved in the ClusterState.
StoreFileMetaData
StoreStats
StreamInput	A stream from this node to another node.
StreamOutput	A stream from another node to this node.
Streams	Simple utility methods for file and stream copying.
Streams	Simple utility methods for file and stream copying.
StrictDynamicMappingException
StringDistance	Interface for string distances.
StringField	A field that is indexed but not tokenized: the entire String value is indexed as a single token.
StringFieldType	Base class for MappedFieldType implementations that use the same representation for internal index terms as the external representation so that partial matching queries such as prefix, wildcard and fuzzy queries can be implemented.
StringHelper	Methods for manipulating strings.
StringRareTerms
StringRareTerms.Bucket
StringRareTermsAggregator	An aggregator that finds "rare" string values (e.g.
Strings	String utilities.
Strings
StringSortScript
StringSortScript.Factory	A factory to construct stateful StringSortScript factories for a specific index.
StringSortScript.LeafFactory	A factory to construct StringSortScript instances.
StringTerms	Result of the TermsAggregator when the field is a String.
StringTerms.Bucket
StringTermsAggregator	An aggregator of string values.
StringUtil	Utility methods for working with Strings.
STRtree	A query-only R-tree created using the Sort-Tile-Recursive (STR) algorithm.
StupidBackoff	A "stupid-backoff" smoothing model similar to Katz's Backoff.
SubSearchContext
SuccessfullyProcessed	Implemented by WorkerBulkByScrollTaskState and BulkByScrollTask.Status to consistently implement SuccessfullyProcessed.getSuccessfullyProcessed().
Suggest	Top level suggest result, containing the result for each suggestion.
Suggest.Suggestion<T extends Suggest.Suggestion.Entry>	The suggestion responses corresponding with the suggestions in the request.
Suggest.Suggestion.Entry<O extends Suggest.Suggestion.Entry.Option>	Represents a part from the suggest text with suggested options.
Suggest.Suggestion.Entry.Option	Contains the suggested text with its document frequency and score.
SuggestBuilder	Defines how to perform suggesting.
SuggestBuilders	A static factory for building suggester lookup queries
Suggester<T extends SuggestionSearchContext.SuggestionContext>
SuggestField	Field that indexes a string value and a weight as a weighted completion against a named suggester.
SuggestionBuilder<T extends SuggestionBuilder<T>>	Base class for the different suggestion implementations.
SuggestionSearchContext
SuggestionSearchContext.SuggestionContext
SuggestMode	Set of strategies for suggesting related terms
SuggestPhase	Suggest phase of a search request, used to collect suggestions
SuggestStopFilter	Like StopFilter except it will not remove the last token if that token was not followed by some token separator.
SuggestWord	SuggestWord, used in suggestSimilar method in SpellChecker class.
SuggestWordFrequencyComparator	Frequency first, then score.
SuggestWordQueue	Sorts SuggestWord instances
SuggestWordScoreComparator	Score first, then frequency
Sum	An aggregation that computes the sum of the values in the current bucket.
SumAggregationBuilder
SumBucketPipelineAggregationBuilder
SumBucketPipelineAggregator
SupportedFormats	Information about the formats a SpatialContext can read/write
SuppressForbidden	Suppresses forbidden-API checks.
SuppressForbidden	Annotation to suppress forbidden-apis errors inside a whole class, a method, or a field.
SuppressForbidden	Annotation to suppress forbidden-apis errors inside a whole class, a method, or a field.
SuppressLoggerChecks	Annotation to suppress logging usage checks errors inside a whole class or a method.
SweepLineEvent
SyncConfig
SyncedFlushAction
SyncedFlushRequest	A synced flush request to sync flush one or more indices.
SyncedFlushRequestBuilder
SyncedFlushResponse	The result of performing a sync flush operation on all shards of multiple indices
SyncedFlushResponse
SyncedFlushResponse.IndexResult	Description for the flush/synced results for a particular index.
SyncedFlushResponse.ShardCounts	Encapsulates the number of total successful and failed shard copies
SyncedFlushResponse.ShardFailure	Description of a failed shard copy for an index.
SyncedFlushService
SyncedFlushService.InFlightOpsRequest
SyncedFlushService.PreShardSyncedFlushRequest
SyncedFlushService.ShardSyncedFlushRequest
SyncedFlushService.ShardSyncedFlushResponse	Response for third step of synced flush (writing the sync id) for one shard copy
SynonymFilter	Deprecated. Use SynonymGraphFilter instead, but be sure to also use FlattenGraphFilter at index time (not at search time) as well.
SynonymGraphFilter	Applies single- or multi-token synonyms from a SynonymMap to an incoming TokenStream, producing a fully correct graph output.
SynonymMap	A map of synonyms, keys and values are phrases.
SynonymMap.Builder	Builds an FSTSynonymMap.
SynonymMap.Parser	Abstraction for parsing synonym files.
SynonymQuery	A query that treats multiple terms as synonyms.
SynonymQuery.Builder	A builder for SynonymQuery.
Table
Table.Cell
Task	Current task information
Task.Status	Report of the internal status of a task.
TaskAwareRequest	An interface for a request that can be used to register a task manager task
TaskBatcher	Batching support for PrioritizedEsThreadPoolExecutor Tasks that share the same batching key are batched (see TaskBatcher.BatchedTask.batchingKey)
TaskCancelledException	A generic exception that can be thrown by a task when it's cancelled by the task manager API
TaskGroup	Information about a currently running task and all its subtasks.
TaskGroup.Builder
TaskId	Task id that consists of node id and id of the task on the node
TaskInfo	Information about a currently running task.
TaskListener<Response>	Listener for Task success or failure.
TaskManager	Task Manager service for keeping track of currently running tasks on the nodes
TaskOperationFailure	Information about task operation failures The class is final due to serialization limitations
TaskResult	Information about a running task or a task that stored its result.
TaskResultsService	Service that can store task results.
TasksClient	A wrapper for the RestHighLevelClient that provides methods for accessing the Tasks API.
TasksRequestBuilder<Request extends BaseTasksRequest<Request>,Response extends BaseTasksResponse,RequestBuilder extends TasksRequestBuilder<Request,Response,RequestBuilder>>	Builder for task-based requests
TaskSubmissionResponse
TaskTransportChannel
TcpChannel	This is a tcp channel representing a single channel connection to another node.
TcpChannel.ChannelStats
TcpHeader
TcpServerChannel	This is a tcp channel representing a server channel listening for new connections.
TcpTransport
TcpTransport.HttpRequestOnTransportException	A helper exception to mark an incoming connection as potentially being HTTP so an appropriate error code can be returned
TcpTransport.ProfileSettings	Representation of a transport profile settings for a transport.profiles.$profilename.*
TcpTransportChannel
TDigest	Adaptive histogram based on something like streaming k-means crossed with Q-digest.
TDigestState	Extension of TDigest with custom serialization.
TemplateRoleName	A role name that uses a dynamic template.
TemplateRoleName.Fields
TemplateRoleName.Format
TemplateScript	A string template rendered as a script.
TemplateScript.Factory
TemplateUpgradeService	Upgrades Templates on behalf of installed Plugins when a node joins the cluster
Term	A Term represents a word from text.
TermFrequencyAttribute	Sets the custom term frequency of a term within one document.
TermInSetQuery	Specialization for a disjunction over many terms that behaves like a ConstantScoreQuery over a BooleanQuery containing only BooleanClause.Occur.SHOULD clauses.
TermQuery	A Query that matches documents containing a term.
TermQueryBuilder	A Query that matches documents containing a term.
TermQueryPrefixTreeStrategy	A basic implementation of PrefixTreeStrategy using a large TermInSetQuery of all the cells from SpatialPrefixTree.getTreeCellIterator(org.locationtech.spatial4j.shape.Shape, int).
TermRangeQuery	A Query that matches documents within an range of terms.
Terms	Access to the terms in a specific field.
Terms	A terms aggregation.
Terms.Bucket	A bucket that is associated with a single term
TermsAggregationBuilder
TermsAggregator
TermsAggregator.BucketCountThresholds
TermsAggregatorFactory
TermsAggregatorFactory.ExecutionMode
TermsEnum	Iterator to seek (TermsEnum.seekCeil(BytesRef), TermsEnum.seekExact(BytesRef)) or step through (BytesRefIterator.next() terms to obtain frequency information (TermsEnum.docFreq()), PostingsEnum or PostingsEnum for the current term (TermsEnum.postings(org.apache.lucene.index.PostingsEnum).
TermsEnum.SeekStatus	Represents returned result from TermsEnum.seekCeil(org.apache.lucene.util.BytesRef).
TermsGroupConfig	The configuration object for the histograms in the rollup config { "groups": [ "terms": { "fields" : [ "foo", "bar" ] } ] }
TermsGroupSource
TermsGroupSource.Builder
TermsLookup	Encapsulates the parameters needed to fetch terms.
TermSpans	Expert: Public for extension only.
TermsQueryBuilder	A filter for a field based on several terms matching on any of them.
TermsSetQueryBuilder
TermsSetQueryScript
TermsSetQueryScript.Factory	A factory to construct stateful TermsSetQueryScript factories for a specific index.
TermsSetQueryScript.LeafFactory	A factory to construct TermsSetQueryScript instances.
TermsSliceQuery	A SliceQuery that uses the terms dictionary of a field to do the slicing.
TermState	Encapsulates all required internal state to position the associated TermsEnum without re-seeking.
TermStates	Maintains a IndexReader TermState view over IndexReader instances containing a single term.
TermStatistics	Contains statistics for a specific term
TermStats	Holder for per-term statistics.
TermSuggester
TermSuggestion	The suggestion responses corresponding with the suggestions in the request.
TermSuggestion.Entry	Represents a part from the suggest text with suggested options.
TermSuggestion.Entry.Option	Contains the suggested text with its document frequency and score.
TermSuggestion.Frequency
TermSuggestion.Score
TermSuggestionBuilder	Defines the actual suggest command.
TermSuggestionBuilder.StringDistanceImpl	An enum representing the valid string edit distance algorithms for determining suggestions.
TermSuggestionBuilder.SuggestMode	An enum representing the valid suggest modes.
TermsValuesSourceBuilder	A CompositeValuesSourceBuilder that builds a ValuesSource from a Script or a field name.
TermToBytesRefAttribute	This attribute is requested by TermsHashPerField to index the contents.
TermVectorLeafReader	Wraps a Terms with a LeafReader, typically from term vectors.
TermVectorOffsetStrategy	Uses term vectors that contain offsets.
TermVectorsAction
TermVectorsFields	This class represents the result of a TermVectorsRequest.
TermVectorsFilter
TermVectorsFilter.ScoreTerm
TermVectorsFormat	Controls the format of term vectors
TermVectorsReader	Codec API for reading term vectors:
TermVectorsRequest	Request returning the term vector (doc frequency, positions, offsets) for a document.
TermVectorsRequest
TermVectorsRequest.FilterSettings
TermVectorsRequest.Flag
TermVectorsRequestBuilder	The builder class for a term vector request.
TermVectorsResponse
TermVectorsResponse
TermVectorsResponse.TermVector
TermVectorsResponse.TermVector.FieldStatistics
TermVectorsResponse.TermVector.Term
TermVectorsResponse.TermVector.Token
TermVectorsService
TermVectorsWriter	Codec API for writing term vectors: For every document, TermVectorsWriter.startDocument(int) is called, informing the Codec how many fields will be written.
Tessellator	Computes a triangular mesh tessellation for a given polygon.
Tessellator.Node	Circular Doubly-linked list used for polygon coordinates
Tessellator.Triangle	Triangle in the tessellated mesh
Text	Both String and BytesReference representation of the text.
TextField	A field that is indexed and tokenized, without term vectors.
TextFieldMapper	A FieldMapper for full-text fields.
TextFieldMapper.Builder
TextFieldMapper.Defaults
TextFieldMapper.TextFieldType
TextFieldMapper.TypeParser
TextFragment	Low-level class used to record information about a section of a document with a score.
TFIDFSimilarity	Implementation of Similarity with the Vector Space Model.
ThreadContext	A ThreadContext is a map of string headers and a transient map of keyed objects that are associated with a thread.
ThreadContext.StoredContext
ThreadedActionListener<Response>	An action listener that wraps another action listener and threading its execution.
ThreadedActionListener.Wrapper	Wrapper that can be used to automatically wrap a listener in a threaded listener if needed.
ThreadInterruptedException	Thrown by lucene on detecting that Thread.interrupt() had been called.
ThreadPool
ThreadPool.Info
ThreadPool.Names
ThreadPool.ThreadPoolType
ThreadPoolInfo
ThreadPoolStats
ThreadPoolStats.Stats
ThrottlingAllocationDecider	ThrottlingAllocationDecider controls the recovery process per node in the cluster.
TieredMergePolicy	Merges segments of approximately equal size, subject to an allowed number of segments per tier.
TieredMergePolicy.MergeScore	Holds score and explanation for a single candidate merge.
TimedRequest	A base request for any requests that supply timeouts.
TimeoutClusterStateListener	An exception to cluster state listener that allows for timeouts and for post added notifications.
Timer	Helps measure how much time is spent running some methods.
TimestampParsingException
TimeUtil
TimeValue
TimingStats	Stats that give more insight into timing of various operations performed as part of anomaly detection job.
TimSorter	Sorter implementation based on the TimSort algorithm.
ToChildBlockJoinQuery	Just like ToParentBlockJoinQuery, except this query joins in reverse: you provide a Query matching parent documents and it joins down to child documents.
Token	Describes the input token stream.
TokenFilter	A TokenFilter is a TokenStream whose input is another TokenStream.
TokenFilterFactory	Abstract parent class for analysis factories that create TokenFilter instances.
TokenFilterFactory
TokenGroup	One, or several overlapping tokens, along with the score(s) and the scope of the original text.
Tokenizer	A Tokenizer is a TokenStream whose input is a Reader.
TokenizerFactory	Abstract parent class for analysis factories that create Tokenizer instances.
TokenizerFactory
TokenMgrError	Token Manager Error.
TokenStream	A TokenStream enumerates the sequence of tokens, either from Fields of a Document or from query text.
TokenStreamFromTermVector	TokenStream created from a term vector field.
TokenStreamOffsetStrategy	Analyzes the text, producing a single OffsetsEnum wrapping the TokenStream filtered to terms in the query, including wildcards.
TokenStreamToAutomaton	Consumes a TokenStream and creates an Automaton where the transition labels are UTF8 bytes (or Unicode code points if unicodeArcs is true) from the TermToBytesRefAttribute.
TooComplexToDeterminizeException	This exception is thrown when determinizing an automaton would result in one which has too many states.
ToParentBlockJoinQuery	This query requires that you index children and parent docs as a single block, using the IndexWriter.addDocuments() or IndexWriter.updateDocuments() API.
TopDocs	Represents hits returned by IndexSearcher.search(Query,int).
TopDocsAndMaxScore	Wrapper around a TopDocs instance and the maximum score.
TopDocsCollector<T extends ScoreDoc>	A base class for all collectors that return a TopDocs output.
TopFieldCollector	A Collector that sorts by SortField using FieldComparators.
TopFieldDocs	Represents hits returned by IndexSearcher.search(Query,int,Sort).
TopHits	Accumulation of the most relevant hits for a bucket this aggregation falls into.
TopHitsAggregationBuilder
TopologyException	Indicates an invalid or inconsistent topological situation encountered during processing
TopologyLocation	A TopologyLocation is the labelling of a GraphComponent's topological relationship to a single Geometry.
TopologyValidationError	Contains information about the nature and location of a Geometry validation error
TopScoreDocCollector	A Collector implementation that collects the top-scoring hits, returning them as a TopDocs.
TopSuggestDocs	TopDocs wrapper with an additional CharSequence key per ScoreDoc
TopSuggestDocs.SuggestScoreDoc	ScoreDoc with an additional CharSequence key
TopSuggestDocsCollector	Collector that collects completion and score, along with document id
TopTermsRewrite<B>	Base rewrite method for collecting only the top terms via a priority queue.
ToStringBuilder	Helps with toString() methods.
TotalHitCountCollector	Just counts the total number of hits.
TotalHits	Description of the total number of hits of a query.
TotalHits.Relation	How the TotalHits.value should be interpreted.
ToXContent	An interface allowing to transfer an object to "XContent" using an XContentBuilder.
ToXContent.DelegatingMapParams
ToXContent.MapParams
ToXContent.Params
ToXContentFragment	An interface allowing to transfer an object to "XContent" using an XContentBuilder.
ToXContentObject	An interface allowing to transfer an object to "XContent" using an XContentBuilder.
TrackingDirectoryWrapper	A delegating Directory that records which files were written to and deleted.
TrackingResultProcessor	Processor to be used within Simulate API to keep track of processors executed in pipeline.
TragicExceptionHolder
TransformCheckpointingInfo
TransformCheckpointStats
TransformClient
TransformConfig
TransformConfig.Builder
TransformConfigUpdate	This class holds the mutable configuration items for a transform
TransformConfigUpdate.Builder
TransformIndexerPosition	Holds state of the cursors: indexer_position: the position of the indexer querying the source bucket_position: the position used for identifying changes
TransformIndexerStats
TransformProgress
TransformStats
TransformStats.State
Transition	Holds one transition from an Automaton.
Translog	A Translog is a per index shard component that records all non-committed index operations in a durable manner.
Translog.Delete
Translog.Durability
Translog.Index
Translog.Location
Translog.NoOp
Translog.Operation	A generic interface representing an operation performed on the transaction log.
Translog.Operation.Type
Translog.Snapshot	A snapshot of the transaction log, allows to iterate over all the transaction log operations.
Translog.Source
Translog.TranslogGeneration	References a transaction log generation
TranslogConfig
TranslogCorruptedException
TranslogDeletionPolicy
TranslogException
TranslogReader	an immutable translog filereader
TranslogStats
TranslogWriter
Transport
Transport.Connection	A unidirectional connection to a DiscoveryNode
Transport.ResponseContext<T extends TransportResponse>	This class represents a response context that encapsulates the actual response handler, the action and the connection it was executed on.
Transport.ResponseHandlers	This class is a registry that allows
TransportAction<Request extends ActionRequest,Response extends ActionResponse>
TransportActionNodeProxy<Request extends ActionRequest,Response extends ActionResponse>	A generic proxy that will execute the given action against a specific node.
TransportActionProxy	TransportActionProxy allows an arbitrary action to be executed on a defined target node while the initial request is sent to a second node that acts as a request proxy to the target node.
TransportActions
TransportAddress	A transport address used for IP socket address (wraps InetSocketAddress).
TransportAddVotingConfigExclusionsAction
TransportAliasesExistAction
TransportAnalyzeAction	Transport action used to execute analyze requests
TransportBroadcastAction<Request extends BroadcastRequest<Request>,Response extends BroadcastResponse,ShardRequest extends BroadcastShardRequest,ShardResponse extends BroadcastShardResponse>
TransportBroadcastByNodeAction<Request extends BroadcastRequest<Request>,Response extends BroadcastResponse,ShardOperationResult extends Writeable>	Abstraction for transporting aggregated shard-level operations in a single request (NodeRequest) per-node and executing the shard-level operations serially on the receiving node.
TransportBroadcastByNodeAction.EmptyResult	Can be used for implementations of shardOperation for which there is no shard-level return value.
TransportBroadcastReplicationAction<Request extends BroadcastRequest<Request>,Response extends BroadcastResponse,ShardRequest extends ReplicationRequest<ShardRequest>,ShardResponse extends ReplicationResponse>	Base class for requests that should be executed on all shards of an index or several indices.
TransportBulkAction	Groups bulk request items by shard, optionally creating non-existent indices and delegates to TransportShardBulkAction for shard-level bulk execution
TransportCancelTasksAction	Transport action that can be used to cancel currently running cancellable tasks.
TransportChannel	A transport channel allows to send a response to a request on the channel.
TransportCleanupRepositoryAction	Repository cleanup action for repository implementations based on BlobStoreRepository.
TransportClearIndicesCacheAction	Indices clear cache action.
TransportClearScrollAction
TransportClearVotingConfigExclusionsAction
TransportClient	Deprecated. TransportClient is deprecated in favour of the High Level REST client and will be removed in Elasticsearch 8.0.
TransportClient.HostFailureListener	Listener that allows to be notified whenever a node failure / disconnect happens
TransportCloseIndexAction	Close index action
TransportClusterAllocationExplainAction	The TransportClusterAllocationExplainAction is responsible for actually executing the explanation of a shard's allocation on the master node in the cluster.
TransportClusterHealthAction
TransportClusterInfoAction<Request extends ClusterInfoRequest<Request>,Response extends ActionResponse>
TransportClusterRerouteAction
TransportClusterSearchShardsAction
TransportClusterStateAction
TransportClusterStatsAction
TransportClusterStatsAction.ClusterStatsNodeRequest
TransportClusterUpdateSettingsAction
TransportConnectionListener	A listener interface that allows to react on transport events.
TransportCreateIndexAction	Create index action.
TransportCreateSnapshotAction	Transport action for create snapshot operation
TransportDeleteAction	Deprecated.
TransportDeleteIndexAction	Delete index action.
TransportDeleteIndexTemplateAction	Delete index action.
TransportDeleteRepositoryAction	Transport action for unregister repository operation
TransportDeleteSnapshotAction	Transport action for delete snapshot operation
TransportDeleteStoredScriptAction
TransportException
TransportExplainAction	Explain transport action.
TransportFieldCapabilitiesAction
TransportFieldCapabilitiesIndexAction
TransportFlushAction	Flush ActionType.
TransportForceMergeAction	ForceMerge index/indices action.
TransportFuture<V>
TransportGetAction	Performs the get operation.
TransportGetAliasesAction
TransportGetFieldMappingsAction
TransportGetFieldMappingsIndexAction	Transport action used to retrieve the mappings related to fields that belong to a specific index
TransportGetIndexAction	Get index action.
TransportGetIndexTemplatesAction
TransportGetMappingsAction
TransportGetRepositoriesAction	Transport action for get repositories operation
TransportGetSettingsAction
TransportGetSnapshotsAction	Transport Action for get snapshots operation
TransportGetStoredScriptAction
TransportGetTaskAction	ActionType to get a single task.
TransportIndexAction	Deprecated.
TransportIndicesAliasesAction	Add/remove aliases action
TransportIndicesExistsAction	Indices exists action.
TransportIndicesSegmentsAction
TransportIndicesShardStoresAction	Transport action that reads the cluster state for shards with the requested criteria (see ClusterHealthStatus) of specific indices and fetches store information from all the nodes using TransportNodesListGatewayStartedShards
TransportIndicesStatsAction
TransportInfo
TransportInstanceSingleOperationAction<Request extends InstanceShardOperationRequest<Request>,Response extends ActionResponse>
TransportInterceptor	This interface allows plugins to intercept requests on both the sender and the receiver side.
TransportInterceptor.AsyncSender	A simple interface to decorate TransportInterceptor.AsyncSender.sendRequest(Transport.Connection, String, TransportRequest, TransportRequestOptions, TransportResponseHandler)
TransportListTasksAction
TransportLivenessAction
TransportLogger
TransportMainAction
TransportMasterNodeAction<Request extends MasterNodeRequest<Request>,Response extends ActionResponse>	A base class for operations that needs to be performed on the master node.
TransportMasterNodeReadAction<Request extends MasterNodeReadRequest<Request>,Response extends ActionResponse>	A base class for read operations that needs to be performed on the master node.
TransportMessage
TransportMessageListener
TransportMultiGetAction
TransportMultiSearchAction
TransportMultiTermVectorsAction
TransportNodesAction<NodesRequest extends BaseNodesRequest<NodesRequest>,NodesResponse extends BaseNodesResponse,NodeRequest extends BaseNodeRequest,NodeResponse extends BaseNodeResponse>
TransportNodesHotThreadsAction
TransportNodesHotThreadsAction.NodeRequest
TransportNodesInfoAction
TransportNodesInfoAction.NodeInfoRequest
TransportNodesListGatewayMetaState
TransportNodesListGatewayMetaState.NodeGatewayMetaState
TransportNodesListGatewayMetaState.NodeRequest
TransportNodesListGatewayMetaState.NodesGatewayMetaState
TransportNodesListGatewayMetaState.Request
TransportNodesListGatewayStartedShards	This transport action is used to fetch the shard version from each node during primary allocation in GatewayAllocator.
TransportNodesListGatewayStartedShards.NodeGatewayStartedShards
TransportNodesListGatewayStartedShards.NodeRequest
TransportNodesListGatewayStartedShards.NodesGatewayStartedShards
TransportNodesListGatewayStartedShards.Request
TransportNodesListShardStoreMetaData
TransportNodesListShardStoreMetaData.NodeRequest
TransportNodesListShardStoreMetaData.NodesStoreFilesMetaData
TransportNodesListShardStoreMetaData.NodeStoreFilesMetaData
TransportNodesListShardStoreMetaData.Request
TransportNodesListShardStoreMetaData.StoreFilesMetaData
TransportNodesReloadSecureSettingsAction
TransportNodesReloadSecureSettingsAction.NodeRequest
TransportNodesSnapshotsStatus	Transport client that collects snapshot shard statuses from data nodes
TransportNodesSnapshotsStatus.NodeRequest
TransportNodesSnapshotsStatus.NodeSnapshotStatus
TransportNodesSnapshotsStatus.NodesSnapshotStatus
TransportNodesSnapshotsStatus.Request
TransportNodesStatsAction
TransportNodesStatsAction.NodeStatsRequest
TransportNodesUsageAction
TransportNodesUsageAction.NodeUsageRequest
TransportOpenIndexAction	Open index action
TransportPendingClusterTasksAction
TransportPutIndexTemplateAction	Put index template action.
TransportPutMappingAction	Put mapping action.
TransportPutRepositoryAction	Transport action for register repository operation
TransportPutStoredScriptAction
TransportRecoveryAction	Transport action for shard recovery operation.
TransportRefreshAction	Refresh action.
TransportRemoteInfoAction
TransportReplicationAction<Request extends ReplicationRequest<Request>,ReplicaRequest extends ReplicationRequest<ReplicaRequest>,Response extends ReplicationResponse>	Base class for requests that should be executed on a primary copy followed by replica copies.
TransportReplicationAction.ConcreteReplicaRequest<R extends TransportRequest>
TransportReplicationAction.ConcreteShardRequest<R extends TransportRequest>	a wrapper class to encapsulate a request when being sent to a specific allocation id
TransportReplicationAction.PrimaryResult<ReplicaRequest extends ReplicationRequest<ReplicaRequest>,Response extends ReplicationResponse>
TransportReplicationAction.ReplicaResponse
TransportReplicationAction.ReplicaResult
TransportReplicationAction.RetryOnReplicaException
TransportRequest
TransportRequest.Empty
TransportRequestDeduplicator<T extends TransportRequest>	Deduplicator for TransportRequests that keeps track of TransportRequests that should not be sent in parallel.
TransportRequestHandler<T extends TransportRequest>
TransportRequestOptions
TransportRequestOptions.Builder
TransportRequestOptions.Type
TransportResizeAction	Main class to initiate resizing (shrink / split) an index into a new index
TransportResponse
TransportResponse.Empty
TransportResponseHandler<T extends TransportResponse>
TransportRestoreSnapshotAction	Transport action for restore snapshot operation
TransportResyncReplicationAction
TransportRolloverAction	Main class to swap the index pointed to by an alias, given some conditions
Transports
TransportSearchAction
TransportSearchScrollAction
TransportSerializationException
TransportService
TransportService.ContextRestoreResponseHandler<T extends TransportResponse>	This handler wrapper ensures that the response thread executes with the correct thread context.
TransportService.HandshakeResponse
TransportSettings
TransportShardBulkAction	Performs shard-level bulk (index, delete or update) operations
TransportShardFlushAction
TransportShardMultiGetAction
TransportShardMultiTermsVectorAction
TransportShardRefreshAction
TransportSingleItemBulkWriteAction<Request extends ReplicatedWriteRequest<Request>,Response extends ReplicationResponse & WriteResponse>	Deprecated.
TransportSingleShardAction<Request extends SingleShardRequest<Request>,Response extends ActionResponse>	A base class for operations that need to perform a read operation on a single shard copy.
TransportSnapshotsStatusAction
TransportStats
TransportStatus
TransportSyncedFlushAction	Synced flush ActionType.
TransportTasksAction<OperationTask extends Task,TasksRequest extends BaseTasksRequest<TasksRequest>,TasksResponse extends BaseTasksResponse,TaskResponse extends Writeable>	The base class for transport actions that are interacting with currently running tasks.
TransportTermVectorsAction	Performs the get operation.
TransportTypesExistsAction	Types exists transport action.
TransportUpdateAction
TransportUpdateSettingsAction
TransportUpgradeAction	Upgrade index/indices action.
TransportUpgradeSettingsAction
TransportUpgradeStatusAction
TransportValidateQueryAction
TransportVerifyRepositoryAction	Transport action for verifying repository operation
TransportVerifyShardBeforeCloseAction
TransportVerifyShardBeforeCloseAction.ShardRequest
TransportWriteAction<Request extends ReplicatedWriteRequest<Request>,ReplicaRequest extends ReplicatedWriteRequest<ReplicaRequest>,Response extends ReplicationResponse & WriteResponse>	Base class for transport actions that modify data in some shard like index, delete, and shardBulk.
TransportWriteAction.WritePrimaryResult<ReplicaRequest extends ReplicatedWriteRequest<ReplicaRequest>,Response extends ReplicationResponse & WriteResponse>	Result of taking the action on the primary.
TransportWriteAction.WriteReplicaResult<ReplicaRequest extends ReplicatedWriteRequest<ReplicaRequest>>	Result of taking the action on the replica.
Triangle	Represents a planar triangle, and provides methods for calculating various properties of triangles.
TriFunction<S,T,U,R>	Represents a function that accepts three arguments and produces a result.
TruncatedTranslogException
Tuple<V1,V2>
TwoPhaseCommit	An interface for implementations that support 2-phase commit.
TwoPhaseIterator	Returned by Scorer.twoPhaseIterator() to expose an approximation of a DocIdSetIterator.
TypeAttribute	A Token's lexical type.
TypeConverter	Converts constant string values to a different type.
TypeConverterBinding	Registration of type converters for matching target types.
TypeEncounter<I>	Context of an injectable type encounter.
TypeFieldMapper
TypeFieldMapper.Defaults
TypeFieldMapper.TypeFieldType
TypeFieldMapper.TypeParser
TypeFieldMapper.TypesQuery	Specialization for a disjunction over many _type
TypeListener	Listens for Guice to encounter injectable types.
TypeListenerBinding	Binds types (picked using a Matcher) to an type listener.
TypeLiteral<T>	Represents a generic type T.
TypeMissingException
TypeParsers
TypeQualifier	This qualifier is applied to an annotation to denote that the annotation should be treated as a type qualifier.
TypeQualifierNickname	This annotation is applied to a annotation, and marks the annotation as being a qualifier nickname.
TypeQualifierValidator<A extends Annotation>
TypeQueryBuilder
Types	Static methods for working with types.
TypesExistsAction
TypesExistsRequest
TypesExistsRequestBuilder	Deprecated.
TypesExistsResponse	Whether all of the existed types exist.
UHComponents	A parameter object to hold the components a FieldOffsetStrategy needs.
Uid
UnaryUnionOp	Unions a Collection of Geometrys or a single Geometry (which may be a GeoometryCollection) together.
UnassignedInfo	Holds additional information as to why the shard is in unassigned state.
UnassignedInfo.AllocationStatus	Captures the status of an unsuccessful allocation attempt for the shard, causing it to remain in the unassigned state.
UnassignedInfo.Reason	Reason why the shard is in unassigned state.
UnavailableShardsException
UncategorizedExecutionException
UnfollowAction
UnfollowRequest
UnfreezeIndexRequest	Request for the _unfreeze index API
UnicastZenPing
UnicastZenPing.UnicastPingRequest
UnicastZenPing.UnicastPingResponse
UnicodeUtil	Class to encode java's UTF16 char[] into UTF8 byte[] without always allocating a new byte[] as String.getBytes(StandardCharsets.UTF_8) does.
UnifiedHighlighter	A Highlighter that can get offsets from either postings (IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS), term vectors (FieldType.setStoreTermVectorOffsets(boolean)), or via re-analyzing text.
UnifiedHighlighter
UnifiedHighlighter.HighlightFlag	Flags for controlling highlighting behavior.
UnifiedHighlighter.LimitedStoredFieldVisitor	Fetches stored fields for highlighting.
UnifiedHighlighter.OffsetSource	Source of term offsets; essential for highlighting.
UniqueCoordinateArrayFilter	A CoordinateFilter that builds a set of Coordinates.
UnknownNamedObjectException	Thrown when NamedXContentRegistry.parseNamedObject(Class, String, XContentParser, Object) is called with an unregistered name.
UnmappedRareTerms	Result of the RareTerms aggregation when the field is unmapped.
UnmappedRareTerms.Bucket
UnmappedSampler
UnmappedSignificantTerms	Result of the running the significant terms aggregation on an unmapped field.
UnmappedSignificantTerms.Bucket	Concrete type that can't be built because Java needs a concrete type so InternalTerms.Bucket can have a self type but UnmappedTerms doesn't ever need to build it because it never returns any buckets.
UnmappedTerms	Result of the TermsAggregator when the field is unmapped.
UnmappedTerms.Bucket	Concrete type that can't be built because Java needs a concrete type so InternalTerms.Bucket can have a self type but UnmappedTerms doesn't ever need to build it because it never returns any buckets.
UnsupportedSpatialOperation	Exception thrown when the SpatialStrategy cannot implement the requested operation.
UntargettedBinding<T>	An untargetted binding.
UntargettedBindingImpl<T>
UpdateAction
UpdateByQueryRequest	Request to update some documents.
UpdateDatafeedRequest	Requests an update to a DatafeedConfig with the passed DatafeedUpdate settings
UpdateFilterRequest	Updates an existing MlFilter configuration
UpdateHelper	Helper for translating an update request to an index, delete request or update response.
UpdateHelper.ContextFields	Field names used to populate the script context
UpdateHelper.Result
UpdateJobRequest	Updates a Job with the passed JobUpdate settings
UpdateModelSnapshotRequest	A request to update information about an existing model snapshot for a given job
UpdateModelSnapshotResponse	A response acknowledging the update of information for an existing model snapshot for a given job
UpdatePersistentTaskStatusAction
UpdatePersistentTaskStatusAction.Request
UpdatePersistentTaskStatusAction.RequestBuilder
UpdatePersistentTaskStatusAction.TransportAction
UpdateRequest
UpdateRequestBuilder
UpdateResponse
UpdateResponse.Builder	Builder class for UpdateResponse.
UpdateScript	An update script.
UpdateScript.Factory
UpdateSettingsAction
UpdateSettingsClusterStateUpdateRequest	Cluster state update request that allows to update settings for some indices
UpdateSettingsRequest	Request for an update index settings action
UpdateSettingsRequestBuilder	Builder for an update index settings request
UpdateTransformRequest
UpdateTransformResponse
UpgradeAction	Upgrade index/indices action.
UpgradeRequest	A request to upgrade one or more indices.
UpgradeRequest.Defaults
UpgradeRequestBuilder	A request to upgrade one or more indices.
UpgradeResponse	A response for the upgrade action.
UpgradeSettingsAction
UpgradeSettingsClusterStateUpdateRequest	Cluster state update request that allows to change minimum compatibility settings for some indices
UpgradeSettingsRequest	Request for an update index settings action
UpgradeStatusAction
UpgradeStatusRequest
UpgradeStatusRequestBuilder
UpgradeStatusResponse
UsageService	A service to monitor usage of Elasticsearch features.
UsageTrackingQueryCachingPolicy	A QueryCachingPolicy that tracks usage statistics of recently-used filters in order to decide on which filters are worth caching.
User	A user to be utilized with security APIs.
UserException	An exception representing a user fixable problem in Command usage.
UserIndicesPrivileges	Represents an "index" privilege in the GetUserPrivilegesResponse.
UTF32ToUTF8	Converts UTF-32 automata to the equivalent UTF-8 representation.
UTF8StreamWriter
Util	Static helper methods.
Util.FSTPath<T>	Represents a path in TopNSearcher.
Util.Result<T>	Holds a single input (IntsRef) + output, returned by shortestPaths().
Util.TopNSearcher<T>	Utility class to find top N shortest paths from start point(s).
Util.TopResults<T>	Holds the results for a top N search using Util.TopNSearcher
UUIDs
Validatable	Defines a validation layer for Requests.
ValidateActions
ValidateJoinRequest
ValidateQueryAction
ValidateQueryRequest	A request to validate a specific query.
ValidateQueryRequestBuilder
ValidateQueryResponse	The response of the validate action.
ValidationException	Encapsulates an accumulation of validation errors
ValidationException	Encapsulates an accumulation of validation errors
ValidationRule	Indicates how JTS geometries (notably polygons but applies to other geometries too) are validated (if at all) and repaired (if at all).
ValueCount	An get that holds the number of values that the current document set has for a specific field.
ValueCountAggregationBuilder
ValueRecorder
ValueSource	Holds a value.
ValueSource.ByteValue
ValueSource.ListValue
ValueSource.MapValue
ValueSource.ObjectValue
ValueSource.TemplatedValue
ValuesSource
ValuesSource.Bytes
ValuesSource.Bytes.FieldData
ValuesSource.Bytes.Script
ValuesSource.Bytes.WithOrdinals
ValuesSource.Bytes.WithOrdinals.FieldData
ValuesSource.GeoPoint
ValuesSource.GeoPoint.Fielddata
ValuesSource.Numeric
ValuesSource.Numeric.FieldData
ValuesSource.Numeric.Script
ValuesSource.Numeric.WithScript
ValuesSource.Range
ValuesSource.WithScript
ValuesSourceAggregationBuilder<VS extends ValuesSource,AB extends ValuesSourceAggregationBuilder<VS,AB>>
ValuesSourceAggregationBuilder.LeafOnly<VS extends ValuesSource,AB extends ValuesSourceAggregationBuilder<VS,AB>>
ValuesSourceAggregatorFactory<VS extends ValuesSource>
ValuesSourceConfig<VS extends ValuesSource>	A configuration that tells aggregations how to retrieve data from the index in order to run a specific aggregation.
ValuesSourceParserHelper
ValuesSourceType
ValueType
VectorGeoShapeQueryProcessor
VerificationFailure
VerifyingIndexOutput	abstract class for verifying what was written.
VerifyNodeRepositoryAction
VerifyNodeRepositoryAction.VerifyNodeRepositoryRequest
VerifyRepositoryAction	Unregister repository action
VerifyRepositoryRequest	Unregister repository request.
VerifyRepositoryRequestBuilder	Builder for unregister repository request
VerifyRepositoryResponse	Verify repository response
VerifyRepositoryResponse.NodeView
Version	Use by certain classes to match version compatibility across releases of Lucene.
Version
VersionConflictEngineException
VersionedNamedWriteable	A NamedWriteable that has a minimum version associated with it.
VersionFetchSubPhase
VersionFieldMapper	Mapper for the _version field.
VersionFieldMapper.Defaults
VersionFieldMapper.TypeParser
Versions
VersionsAndSeqNoResolver	Utility class to resolve the Lucene doc ID, version, seqNo and primaryTerms for a given uid.
VersionsAndSeqNoResolver.DocIdAndSeqNo	Wraps an LeafReaderContext, a doc ID relative to the context doc base and a seqNo.
VersionsAndSeqNoResolver.DocIdAndVersion	Wraps an LeafReaderContext, a doc ID relative to the context doc base and a version.
VersionType
Vertex	A vertex in a graph response represents a single term (a field and value pair) which appears in one or more documents found as part of the graph exploration.
Vertex.VertexId	An identifier (implements hashcode and equals) that represents a unique key for a Vertex
VertexRequest	A request to identify terms from a choice of field as part of a Hop.
WarmerStats
WarningFailureException	This exception is used to indicate that one or more Response.getWarnings() exist and is typically used when the RestClient is set to fail by setting RestClientBuilder.setStrictDeprecationMode(boolean) to `true`.
WarningsHandler	Called if there are warnings to determine if those warnings should fail the request.
WatcherClient
WatcherHandle<W extends ResourceWatcher>
WatcherMetaData
WatcherState
WatcherStatsRequest	A request to explicitly acknowledge a watch.
WatcherStatsResponse	The response from an 'ack watch' request.
WatcherStatsResponse.Node
WatchExecutionSnapshot
WatchStatus
WatchStatus.Field
WatchStatus.State
WatchStatusDateParser
Weight	Expert: Calculate query weights and build query scorers.
Weight.DefaultBulkScorer	Just wraps a Scorer and performs top scoring using it.
WeightBuilder	A query that multiplies the weight to the score.
WeightedAvg	An aggregation that computes the average of the values in the current bucket.
WeightedAvgAggregationBuilder
WeightedSpanTerm	Lightweight class to hold term, weight, and positions used for scoring this term.
WeightedSpanTermExtractor	Class used to extract WeightedSpanTerms from a Query based on whether Terms from the Query are contained in a supplied TokenStream.
WeightedSpanTermExtractor.PositionCheckingMap<K>	This class makes sure that if both position sensitive and insensitive versions of the same term are added, the position insensitive one wins.
WeightedTerm	Lightweight class to hold term and a weight value used for scoring this term
WeightFactorFunction
WellKnownText	Utility class for converting to and from WKT
When	Used to describe the relationship between a qualifier T and the set of values S possible on an annotated element.
WhitespaceAnalyzer	An Analyzer that uses WhitespaceTokenizer.
WhitespaceAnalyzerProvider
WhitespaceTokenizer	A tokenizer that divides text at whitespace characters as defined by Character.isWhitespace(int).
WildcardQuery	Implements the wildcard search query.
WildcardQueryBuilder	Implements the wildcard search query.
WithinPrefixTreeQuery	Finds docs where its indexed shape is WITHIN the query shape.
WKBConstants	Constant values used by the WKB format
WKBReader	Reads a Geometryfrom a byte stream in Well-Known Binary format.
WKBWriter	Writes a Geometry into Well-Known Binary format.
WKTReader	An extensible parser for Well Known Text (WKT).
WKTWriter	Writes the Well-Known Text representation of a Geometry.
WKTWriter
WordlistLoader	Loader for text files that represent a list of stopwords.
WordScorer
WordScorer.WordScorerFactory
WorkerBulkByScrollTaskState	Task behavior for BulkByScrollTask that does the actual work of querying and indexing
WrappedRunnable
WrapperQueryBuilder	A Query builder which allows building a query given JSON string or binary data provided as input.
WrappingProcessor	A srapping processor is one that encapsulates an inner processor, or a processor that the wrapped processor enacts upon.
Writeable	Implementers can be written to a StreamOutput and read from a StreamInput.
Writeable.Reader<V>	Reference to a method that can read some object from a stream.
Writeable.Writer<V>	Reference to a method that can write some object to a StreamOutput.
WriteRequest<R extends WriteRequest<R>>	Interface implemented by requests that modify the documents in an index like IndexRequest, UpdateRequest, and BulkRequest.
WriteRequest.RefreshPolicy
WriteRequestBuilder<B extends WriteRequestBuilder<B>>
WriteResponse	Interface implemented by responses for actions that modify the documents in an index like IndexResponse, UpdateResponse, and BulkResponse.
WriterReaderPhaser	WriterReaderPhaser provides an asymmetric means for synchronizing the execution of wait-free "writer" critical sections against a "reader phase flip" that needs to make sure no writer critical sections that were active at the beginning of the flip are still active after the flip is done.
WriteStateException	This exception is thrown when there is a problem of writing state to disk.
XContent	A generic abstraction on top of handling content, inspired by JSON and pull parsing.
XContentBuilder	A utility to build XContent (ie json).
XContentBuilder.HumanReadableTransformer	Interface for transforming complex objects into their "raw" equivalents for human-readable fields
XContentBuilder.Writer
XContentBuilderExtension	This interface provides a way for non-JDK classes to plug in a way to serialize to xcontent.
XContentElasticsearchExtension	SPI extensions for Elasticsearch-specific classes (like the Lucene or Joda dependency classes) that need to be encoded by XContentBuilder in a specific way.
XContentFactory	A one stop to use XContent and XContentBuilder.
XContentGenerator
XContentHelper
XContentLocation	Simple data structure representing the line and column number of a position in some XContent e.g.
XContentMapValues
XContentParseException	Thrown when one of the XContent parsers cannot parse something.
XContentParser	Interface for pull - parsing XContent see XContentType for supported types.
XContentParser.NumberType
XContentParser.Token
XContentParserUtils	A set of static methods to get XContentParser.Token from XContentParser while checking for their types and throw ParsingException if needed.
XContentSubParser	Wrapper for a XContentParser that makes a single object/array look like a complete document.
XContentType	The content type of XContent.
XContentUtils
XMoreLikeThis	Generate "more like this" similarity queries.
XPackClient	A wrapper for the RestHighLevelClient that provides methods for accessing the Elastic Licensed X-Pack APIs that are shipped with the default distribution of Elasticsearch.
XPackInfoRequest	Fetch information about X-Pack from the cluster.
XPackInfoRequest.Category
XPackInfoResponse
XPackInfoResponse.BuildInfo
XPackInfoResponse.FeatureSetsInfo
XPackInfoResponse.FeatureSetsInfo.FeatureSet
XPackInfoResponse.LicenseInfo
XPackUsageRequest
XPackUsageResponse	Response object from calling the xpack usage api.
XQueryParser	This class is just a workaround to make QueryParserBase.handleBareFuzzy(String, Token, String) accessible by sub-classes.
XRejectedExecutionHandler
XShapeCollection<S extends Shape>	Extends spatial4j ShapeCollection for points_only shape indexing support
XYEncodingUtils	reusable cartesian geometry encoding methods
XYLine	Represents a line in cartesian space.
XYPolygon	Represents a polygon in cartesian space.
ZenDiscovery
ZenDiscovery.RejoinClusterRequest
ZenPing
ZenPing.PingCollection	a utility collection of pings where only the most recent ping is stored per node
ZenPing.PingResponse