Package org.apache.hadoop.hive.ql.metadata

Interface Summary

Interface	Description
HiveMetaStoreClientWithLocalCache.CacheI	Cache interface.
HiveStorageHandler	HiveStorageHandler defines a pluggable interface for adding new storage handlers to Hive.
HiveStoragePredicateHandler	HiveStoragePredicateHandler is an optional companion to HiveStorageHandler; it should only be implemented by handlers which support decomposition of predicates being pushed down into table scans.
InputEstimator
StorageHandlerInfo	StorageHandlerInfo is a marker interface used to provide runtime information associated with a storage handler.

Class Summary

Class	Description
CheckConstraint	CheckConstraintInfo is a metadata structure containing the Check constraints associated with a table.
CheckConstraint.CheckConstraintCol
CheckJDOException	Check if this is a javax.jdo.JDODataStoreException
DefaultConstraint	DefaultConstraintInfo is a metadata structure containing the default constraints associated with a table.
DefaultStorageHandler	DefaultStorageHandler is an implementation of HiveStorageHandler which supplies the standard defaults for all options.
Dimension	Hive consists of a fixed, well defined set of Dimensions.
DummyPartition	A Hive Table Partition: is a fundamental storage unit within a Table.
ForeignKeyInfo	ForeignKeyInfo is a metadata structure containing the foreign keys associated with a table.
Hive	This class has functions that implement meta data/DDL operations using calls to the metastore.
HiveMaterializedViewsRegistry	Registry for materialized views.
HiveMetaStoreClientWithLocalCache	This class introduces a caching layer in HS2 for metadata for some selected query APIs.
HiveMetaStoreClientWithLocalCache.CacheKey	CacheKey objects are used as key for the cache.
HiveMetaStoreClientWithLocalCache.CacheWrapper	Wrapper to create a cache around a Caffeine Cache.
HiveMetaStoreClientWithLocalCache.TableWatermark	Internal class to identify uniquely a Table.
HiveRelOptMaterialization	Hive extension of RelOptMaterialization.
HiveStoragePredicateHandler.DecomposedPredicate	Struct class for returning multiple values from decomposePredicate.
HiveUtils	General collection of helper functions.
InputEstimator.Estimation
JarUtils	Utilities to ship containing jars to the backend.
MaterializationValidationResult
MaterializedViewMetadata
MaterializedViewsCache	Collection for storing HiveRelOptMaterializations.
NotNullConstraint	NotNullConstraintInfo is a metadata structure containing the not null constraints associated with a table.
Partition	A Hive Table Partition: is a fundamental storage unit within a Table.
PartitionIterable	PartitionIterable - effectively a lazy Iterable<Partition> Sometimes, we have a need for iterating through a list of partitions, but the list of partitions can be too big to fetch as a single object.
PrimaryKeyInfo	PrimaryKeyInfo is a metadata structure containing the primary key associated with a table.
Sample	A sample defines a subset of data based on sampling on a given dimension.
SessionHiveMetaStoreClient	todo: This need review re: thread safety.
SessionHiveMetaStoreClient.MapWrapper	Wrapper to create a cache around a Map.
Table	A Hive Table: is a fundamental unit of data in Hive that shares a common schema/DDL.
TableConstraintsInfo
TempTable	This stores partition information for a temp table.
UniqueConstraint	UniqueConstraintInfo is a metadata structure containing the unique constraints associated with a table.

Enum Summary

Enum	Description
HiveMetaStoreClientWithLocalCache.KeyType	KeyType is used to differentiate the request types.
HiveRelOptMaterialization.IncrementalRebuildMode
HiveStorageHandler.AcidSupportType
RewriteAlgorithm	Enumeration of Materialized view query rewrite algorithms.
VirtualColumn

Exception Summary

Exception	Description
AuthorizationException
Hive.SchemaException
InvalidTableException	Generic exception class for Hive.