ZkStateReader (Lindorm Search Client 8.10.2 API)

java.lang.Object
- org.apache.solr.common.cloud.ZkStateReader

所有已实现的接口:: Closeable, AutoCloseable, SolrCloseable

public class ZkStateReader
extends Object
implements SolrCloseable

嵌套类概要

嵌套类
限定符和类型	类和说明
`class`	`ZkStateReader.AliasesManager` A class to manage the aliases instance, including watching for changes.
`static class`	`ZkStateReader.ConfigData`

字段概要

字段
限定符和类型	字段和说明
`static String`	`ALIASES`
`ZkStateReader.AliasesManager`	`aliasesManager` Access to the `Aliases`.
`static String`	`AUTO_ADD_REPLICAS`
`static String`	`BASE_URL_PROP`
`static String`	`BLACKLIST`
`static String`	`CLUSTER_PROPS`
`static String`	`CLUSTER_STATE`
`protected ClusterState`	`clusterState` A view of the current state of all collections; combines all the different state sources into a single view.
`static String`	`COLLECTION_DEF` 已过时。 use `CollectionAdminParams.DEFAULTS` instead.
`static String`	`COLLECTION_PROP`
`static String`	`COLLECTION_PROPS_ZKNODE`
`static String`	`COLLECTIONS_ZKNODE`
`static String`	`CONFIGNAME_PROP`
`static String`	`CONFIGS_ZKNODE`
`static String`	`CORE_NAME_PROP` SolrCore name.
`static String`	`CORE_NODE_NAME_PROP`
`static Map`	`DEFAULT_CLUSTER_PROPS`
`static String`	`DEFAULT_SHARD_PREFERENCES`
`static String`	`ELECTION_NODE`
`static String`	`ELECTION_NODE_PROP`
`static String`	`FORCE_SET_STATE_PROP`
`static Set<String>`	`KNOWN_CLUSTER_PROPS`
`static String`	`LEADER_ELECT_ZKNODE`
`static String`	`LEADER_PROP`
`static String`	`LEGACY_CLOUD`
`static String`	`LIVE_NODES_ZKNODE`
`static String`	`LOG_PATH`
`static String`	`MAX_AT_ONCE_PROP`
`static String`	`MAX_CORES_PER_NODE`
`static String`	`MAX_SHARDS_PER_NODE`
`static String`	`MAX_WAIT_SECONDS_PROP`
`static String`	`NODE_NAME_PROP`
`static String`	`NRT_REPLICAS`
`static String`	`NUM_SHARDS_PROP`
`static String`	`PROPERTY_PROP`
`static String`	`PROPERTY_PROP_PREFIX`
`static String`	`PROPERTY_VALUE_PROP`
`static String`	`PULL_REPLICAS`
`static String`	`READ_ONLY`
`static String`	`REJOIN_AT_HEAD_PROP`
`static String`	`REPLICA_PROP`
`static String`	`REPLICA_TYPE`
`static String`	`REPLICATION_FACTOR`
`static String`	`ROLES`
`static String`	`ROLES_PROP`
`static String`	`SAMPLE_PERCENTAGE`
`static String`	`SHARD_ID_PROP`
`static String`	`SHARD_LEADERS_ZKNODE`
`static String`	`SHARD_PARENT_PROP`
`static String`	`SHARD_RANGE_PROP`
`static String`	`SHARD_STATE_PROP`
`static String`	`SHARED_STORAGE_PROP`
`static String`	`SOLR_AUTOSCALING_CONF_PATH`
`static String`	`SOLR_AUTOSCALING_EVENTS_PATH`
`static String`	`SOLR_AUTOSCALING_NODE_ADDED_PATH`
`static String`	`SOLR_AUTOSCALING_NODE_LOST_PATH`
`static String`	`SOLR_AUTOSCALING_TRIGGER_STATE_PATH`
`static String`	`SOLR_PKGS_PATH`
`static String`	`SOLR_SECURITY_CONF_PATH`
`static String`	`STATE_PROP`
`static String`	`STATE_TIMESTAMP_PROP`
`static int`	`STATE_UPDATE_DELAY`
`static String`	`STORAGE_POLICY`
`static String`	`TLOG_REPLICAS`
`static String`	`TTL`
`static String`	`URL_SCHEME`

构造器概要

构造器
构造器和说明
`ZkStateReader(SolrZkClient zkClient)`
`ZkStateReader(SolrZkClient zkClient, Runnable securityNodeListener)`
`ZkStateReader(String zkServerAddress, int zkClientTimeout, int zkClientConnectTimeout)`

方法概要

所有方法静态方法实例方法具体方法
限定符和类型	方法和说明
`void`	`close()`
`Integer`	`compareStateVersions(String coll, int version)`
`void`	`createClusterStateWatchersAndUpdate()`
`DocCollection`	`fetchCollectionState(String coll, org.apache.zookeeper.Watcher watcher, String path)`
`void`	`forceUpdateCollection(String collection)` Forcibly refresh a collection's internal state from ZK.
`void`	`forciblyRefreshAllClusterStateSlow()` Forcibly refresh cluster state from ZK.
`Aliases`	`getAliases()` Get an immutable copy of the present state of the aliases.
`AutoScalingConfig`	`getAutoScalingConfig()` Get current `AutoScalingConfig`.
`AutoScalingConfig`	`getAutoScalingConfig(org.apache.zookeeper.Watcher watcher)` Get current `AutoScalingConfig`.
`String`	`getBaseUrlForNodeName(String nodeName)` Returns the baseURL corresponding to a given node's nodeName -- NOTE: does not (currently) imply that the nodeName (or resulting baseURL) exists in the cluster.
`Map<String,Object>`	`getClusterProperties()` Get all cluster properties for this cluster N.B.
`<T> T`	`getClusterProperty(List<String> keyPath, T defaultValue)` Same as the above but allows a full json path as a list of parts
`<T> T`	`getClusterProperty(String key, T defaultValue)` Get a cluster property N.B.
`ClusterState`	`getClusterState()`
`DocCollection`	`getCollection(String collection)`
`static DocCollection`	`getCollectionLive(ZkStateReader zkStateReader, String coll)`
`static String`	`getCollectionPath(String coll)`
`static String`	`getCollectionPathRoot(String coll)`
`Map<String,String>`	`getCollectionProperties(String collection)` Get collection properties for a given collection.
`Map<String,String>`	`getCollectionProperties(String collection, long cacheForMillis)` Get and cache collection properties for a given collection.
`ZkConfigManager`	`getConfigManager()`
`Replica`	`getLeader(Set<String> liveNodes, DocCollection docCollection, String shard)`
`Replica`	`getLeader(String collection, String shard)`
`Replica`	`getLeaderRetry(String collection, String shard)` Get shard leader properties, with retry if none exist.
`Replica`	`getLeaderRetry(String collection, String shard, int timeout)` Get shard leader properties, with retry if none exist.
`String`	`getLeaderUrl(String collection, String shard, int timeout)`
`List<ZkCoreNodeProps>`	`getReplicaProps(String collection, String shardId, String thisCoreNodeName)`
`List<ZkCoreNodeProps>`	`getReplicaProps(String collection, String shardId, String thisCoreNodeName, Replica.State mustMatchStateFilter)`
`List<ZkCoreNodeProps>`	`getReplicaProps(String collection, String shardId, String thisCoreNodeName, Replica.State mustMatchStateFilter, Replica.State mustNotMatchStateFilter)`
`List<ZkCoreNodeProps>`	`getReplicaProps(String collection, String shardId, String thisCoreNodeName, Replica.State mustMatchStateFilter, Replica.State mustNotMatchStateFilter, EnumSet<Replica.Type> acceptReplicaType)`
`ZkStateReader.ConfigData`	`getSecurityProps(boolean getFresh)` Returns the content of /security.json from ZooKeeper as a Map If the files doesn't exist, it returns null.
`static String`	`getShardLeadersElectPath(String collection, String shardId)` Get path where shard leader elections ephemeral nodes are.
`static String`	`getShardLeadersPath(String collection, String shardId)` Get path where shard leader properties live in zookeeper.
`Object`	`getUpdateLock()`
`SolrZkClient`	`getZkClient()`
`boolean`	`isClosed()`
`boolean`	`isNodeLive(String node)`
`String`	`readConfigName(String collection)` Returns config set name for collection.
`void`	`registerCloudCollectionsListener(CloudCollectionsListener cloudCollectionsListener)` Register a CloudCollectionsListener to be called when the set of collections within a cloud changes.
`void`	`registerClusterPropertiesListener(ClusterPropertiesListener listener)`
`void`	`registerCollectionPropsWatcher(String collection, CollectionPropsWatcher propsWatcher)`
`void`	`registerCollectionStateWatcher(String collection, CollectionStateWatcher stateWatcher)` Register a CollectionStateWatcher to be called when the state of a collection changes or the set of live nodes changes.
`void`	`registerCore(String collection)` Notify this reader that a local Core is a member of a collection, and so that collection state should be watched.
`void`	`registerDocCollectionWatcher(String collection, DocCollectionWatcher stateWatcher)` Register a DocCollectionWatcher to be called when the state of a collection changes The Watcher will automatically be removed when it's `onStateChanged` returns `true`
`void`	`registerLiveNodesListener(LiveNodesListener listener)`
`void`	`removeCloudCollectionsListener(CloudCollectionsListener cloudCollectionsListener)` Remove a registered CloudCollectionsListener.
`void`	`removeClusterPropertiesListener(ClusterPropertiesListener listener)`
`void`	`removeCollectionPropsWatcher(String collection, CollectionPropsWatcher watcher)`
`void`	`removeCollectionStateWatcher(String collection, CollectionStateWatcher watcher)` Remove a watcher from a collection's watch list.
`void`	`removeDocCollectionWatcher(String collection, DocCollectionWatcher watcher)` Remove a watcher from a collection's watch list.
`void`	`removeLiveNodesListener(LiveNodesListener listener)`
`void`	`unregisterCore(String collection)` Notify this reader that a local core that is a member of a collection has been closed.
`void`	`updateLiveNodes()` Refresh the set of live nodes.
`void`	`waitForLiveNodes(long wait, TimeUnit unit, LiveNodesPredicate predicate)` Block until a LiveNodesStatePredicate returns true, or the wait times out Note that the predicate may be called again even after it has returned true, so implementors should avoid changing state within the predicate call itself.
`void`	`waitForState(String collection, long wait, TimeUnit unit, CollectionStatePredicate predicate)` Block until a CollectionStatePredicate returns true, or the wait times out Note that the predicate may be called again even after it has returned true, so implementors should avoid changing state within the predicate call itself.
`void`	`waitForState(String collection, long wait, TimeUnit unit, Predicate<DocCollection> predicate)` Block until a Predicate returns true, or the wait times out Note that the predicate may be called again even after it has returned true, so implementors should avoid changing state within the predicate call itself.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - STATE_UPDATE_DELAY
```
public static final int STATE_UPDATE_DELAY
```
  - BASE_URL_PROP
```
public static final String BASE_URL_PROP
```
    另请参阅:
    
    常量字段值
  - NODE_NAME_PROP
```
public static final String NODE_NAME_PROP
```
    另请参阅:
    
    常量字段值
  - CORE_NODE_NAME_PROP
```
public static final String CORE_NODE_NAME_PROP
```
    另请参阅:
    
    常量字段值
  - ROLES_PROP
```
public static final String ROLES_PROP
```
    另请参阅:
    
    常量字段值
  - STATE_PROP
```
public static final String STATE_PROP
```
    另请参阅:
    
    常量字段值
  - FORCE_SET_STATE_PROP
```
public static final String FORCE_SET_STATE_PROP
```
    另请参阅:
    
    常量字段值
  - CORE_NAME_PROP
```
public static final String CORE_NAME_PROP
```
    SolrCore name.
    
    另请参阅:
    
    常量字段值
  - COLLECTION_PROP
```
public static final String COLLECTION_PROP
```
    另请参阅:
    
    常量字段值
  - ELECTION_NODE_PROP
```
public static final String ELECTION_NODE_PROP
```
    另请参阅:
    
    常量字段值
  - SHARD_ID_PROP
```
public static final String SHARD_ID_PROP
```
    另请参阅:
    
    常量字段值
  - REPLICA_PROP
```
public static final String REPLICA_PROP
```
    另请参阅:
    
    常量字段值
  - SHARD_RANGE_PROP
```
public static final String SHARD_RANGE_PROP
```
    另请参阅:
    
    常量字段值
  - SHARD_STATE_PROP
```
public static final String SHARD_STATE_PROP
```
    另请参阅:
    
    常量字段值
  - SHARD_PARENT_PROP
```
public static final String SHARD_PARENT_PROP
```
    另请参阅:
    
    常量字段值
  - NUM_SHARDS_PROP
```
public static final String NUM_SHARDS_PROP
```
    另请参阅:
    
    常量字段值
  - LEADER_PROP
```
public static final String LEADER_PROP
```
    另请参阅:
    
    常量字段值
  - SHARED_STORAGE_PROP
```
public static final String SHARED_STORAGE_PROP
```
    另请参阅:
    
    常量字段值
  - PROPERTY_PROP
```
public static final String PROPERTY_PROP
```
    另请参阅:
    
    常量字段值
  - PROPERTY_PROP_PREFIX
```
public static final String PROPERTY_PROP_PREFIX
```
    另请参阅:
    
    常量字段值
  - PROPERTY_VALUE_PROP
```
public static final String PROPERTY_VALUE_PROP
```
    另请参阅:
    
    常量字段值
  - MAX_AT_ONCE_PROP
```
public static final String MAX_AT_ONCE_PROP
```
    另请参阅:
    
    常量字段值
  - MAX_WAIT_SECONDS_PROP
```
public static final String MAX_WAIT_SECONDS_PROP
```
    另请参阅:
    
    常量字段值
  - STATE_TIMESTAMP_PROP
```
public static final String STATE_TIMESTAMP_PROP
```
    另请参阅:
    
    常量字段值
  - COLLECTIONS_ZKNODE
```
public static final String COLLECTIONS_ZKNODE
```
    另请参阅:
    
    常量字段值
  - LIVE_NODES_ZKNODE
```
public static final String LIVE_NODES_ZKNODE
```
    另请参阅:
    
    常量字段值
  - ALIASES
```
public static final String ALIASES
```
    另请参阅:
    
    常量字段值
  - CLUSTER_STATE
```
public static final String CLUSTER_STATE
```
    另请参阅:
    
    常量字段值
  - CLUSTER_PROPS
```
public static final String CLUSTER_PROPS
```
    另请参阅:
    
    常量字段值
  - COLLECTION_PROPS_ZKNODE
```
public static final String COLLECTION_PROPS_ZKNODE
```
    另请参阅:
    
    常量字段值
  - REJOIN_AT_HEAD_PROP
```
public static final String REJOIN_AT_HEAD_PROP
```
    另请参阅:
    
    常量字段值
  - SOLR_SECURITY_CONF_PATH
```
public static final String SOLR_SECURITY_CONF_PATH
```
    另请参阅:
    
    常量字段值
  - SOLR_AUTOSCALING_CONF_PATH
```
public static final String SOLR_AUTOSCALING_CONF_PATH
```
    另请参阅:
    
    常量字段值
  - SOLR_AUTOSCALING_EVENTS_PATH
```
public static final String SOLR_AUTOSCALING_EVENTS_PATH
```
    另请参阅:
    
    常量字段值
  - SOLR_AUTOSCALING_TRIGGER_STATE_PATH
```
public static final String SOLR_AUTOSCALING_TRIGGER_STATE_PATH
```
    另请参阅:
    
    常量字段值
  - SOLR_AUTOSCALING_NODE_ADDED_PATH
```
public static final String SOLR_AUTOSCALING_NODE_ADDED_PATH
```
    另请参阅:
    
    常量字段值
  - SOLR_AUTOSCALING_NODE_LOST_PATH
```
public static final String SOLR_AUTOSCALING_NODE_LOST_PATH
```
    另请参阅:
    
    常量字段值
  - SOLR_PKGS_PATH
```
public static final String SOLR_PKGS_PATH
```
    另请参阅:
    
    常量字段值
  - BLACKLIST
```
public static final String BLACKLIST
```
    另请参阅:
    
    常量字段值
  - DEFAULT_SHARD_PREFERENCES
```
public static final String DEFAULT_SHARD_PREFERENCES
```
    另请参阅:
    
    常量字段值
  - REPLICATION_FACTOR
```
public static final String REPLICATION_FACTOR
```
    另请参阅:
    
    常量字段值
  - MAX_SHARDS_PER_NODE
```
public static final String MAX_SHARDS_PER_NODE
```
    另请参阅:
    
    常量字段值
  - AUTO_ADD_REPLICAS
```
public static final String AUTO_ADD_REPLICAS
```
    另请参阅:
    
    常量字段值
  - MAX_CORES_PER_NODE
```
public static final String MAX_CORES_PER_NODE
```
    另请参阅:
    
    常量字段值
  - PULL_REPLICAS
```
public static final String PULL_REPLICAS
```
    另请参阅:
    
    常量字段值
  - NRT_REPLICAS
```
public static final String NRT_REPLICAS
```
    另请参阅:
    
    常量字段值
  - TLOG_REPLICAS
```
public static final String TLOG_REPLICAS
```
    另请参阅:
    
    常量字段值
  - READ_ONLY
```
public static final String READ_ONLY
```
    另请参阅:
    
    常量字段值
  - TTL
```
public static final String TTL
```
    另请参阅:
    
    常量字段值
  - STORAGE_POLICY
```
public static final String STORAGE_POLICY
```
    另请参阅:
    
    常量字段值
  - LOG_PATH
```
public static final String LOG_PATH
```
    另请参阅:
    
    常量字段值
  - DEFAULT_CLUSTER_PROPS
```
public static final Map DEFAULT_CLUSTER_PROPS
```
  - ROLES
```
public static final String ROLES
```
    另请参阅:
    
    常量字段值
  - CONFIGS_ZKNODE
```
public static final String CONFIGS_ZKNODE
```
    另请参阅:
    
    常量字段值
  - CONFIGNAME_PROP
```
public static final String CONFIGNAME_PROP
```
    另请参阅:
    
    常量字段值
  - LEGACY_CLOUD
```
public static final String LEGACY_CLOUD
```
    另请参阅:
    
    常量字段值
  - SAMPLE_PERCENTAGE
```
public static final String SAMPLE_PERCENTAGE
```
    另请参阅:
    
    常量字段值
  - COLLECTION_DEF
```
@Deprecated
public static final String COLLECTION_DEF
```
    已过时。 use CollectionAdminParams.DEFAULTS instead.
    
    另请参阅:
    
    常量字段值
  - URL_SCHEME
```
public static final String URL_SCHEME
```
    另请参阅:
    
    常量字段值
  - REPLICA_TYPE
```
public static final String REPLICA_TYPE
```
    另请参阅:
    
    常量字段值
  - clusterState
```
protected volatile ClusterState clusterState
```
    A view of the current state of all collections; combines all the different state sources into a single view.
  - LEADER_ELECT_ZKNODE
```
public static final String LEADER_ELECT_ZKNODE
```
    另请参阅:
    
    常量字段值
  - SHARD_LEADERS_ZKNODE
```
public static final String SHARD_LEADERS_ZKNODE
```
    另请参阅:
    
    常量字段值
  - ELECTION_NODE
```
public static final String ELECTION_NODE
```
    另请参阅:
    
    常量字段值
  - KNOWN_CLUSTER_PROPS
```
public static final Set<String> KNOWN_CLUSTER_PROPS
```
  - aliasesManager
```
public final ZkStateReader.AliasesManager aliasesManager
```
    Access to the Aliases.
- 构造器详细资料
  - ZkStateReader
```
public ZkStateReader(SolrZkClient zkClient)
```
  - ZkStateReader
```
public ZkStateReader(SolrZkClient zkClient,
                     Runnable securityNodeListener)
```
  - ZkStateReader
```
public ZkStateReader(String zkServerAddress,
                     int zkClientTimeout,
                     int zkClientConnectTimeout)
```
- 方法详细资料
  - getAutoScalingConfig
```
public AutoScalingConfig getAutoScalingConfig()
                                       throws org.apache.zookeeper.KeeperException,
                                              InterruptedException
```
    Get current AutoScalingConfig.
    
    返回:
    
    current configuration from autoscaling.json. NOTE: this data is retrieved from ZK on each call.
    
    抛出:
    
    org.apache.zookeeper.KeeperException
    
    InterruptedException
  - getAutoScalingConfig
```
public AutoScalingConfig getAutoScalingConfig(org.apache.zookeeper.Watcher watcher)
                                       throws org.apache.zookeeper.KeeperException,
                                              InterruptedException
```
    Get current AutoScalingConfig.
    
    参数:
    
    watcher - optional Watcher to set on a znode to watch for config changes.
    
    返回:
    
    current configuration from autoscaling.json. NOTE: this data is retrieved from ZK on each call.
    
    抛出:
    
    org.apache.zookeeper.KeeperException
    
    InterruptedException
  - readConfigName
```
public String readConfigName(String collection)
                      throws org.apache.zookeeper.KeeperException
```
    Returns config set name for collection. TODO move to DocCollection (state.json).
    
    参数:
    
    collection - to return config set name for
    
    抛出:
    
    org.apache.zookeeper.KeeperException
  - getConfigManager
```
public ZkConfigManager getConfigManager()
```
  - forciblyRefreshAllClusterStateSlow
```
public void forciblyRefreshAllClusterStateSlow()
                                        throws org.apache.zookeeper.KeeperException,
                                               InterruptedException
```
    Forcibly refresh cluster state from ZK. Do this only to avoid race conditions because it's expensive.
    It is cheaper to call forceUpdateCollection(String) on a single collection if you must.
    
    抛出:
    
    org.apache.zookeeper.KeeperException
    
    InterruptedException
  - forceUpdateCollection
```
public void forceUpdateCollection(String collection)
                           throws org.apache.zookeeper.KeeperException,
                                  InterruptedException
```
    Forcibly refresh a collection's internal state from ZK. Try to avoid having to resort to this when a better design is possible.
    
    抛出:
    
    org.apache.zookeeper.KeeperException
    
    InterruptedException
  - updateLiveNodes
```
public void updateLiveNodes()
                     throws org.apache.zookeeper.KeeperException,
                            InterruptedException
```
    Refresh the set of live nodes.
    
    抛出:
    
    org.apache.zookeeper.KeeperException
    
    InterruptedException
  - compareStateVersions
```
public Integer compareStateVersions(String coll,
                                    int version)
```
  - createClusterStateWatchersAndUpdate
```
public void createClusterStateWatchersAndUpdate()
                                         throws org.apache.zookeeper.KeeperException,
                                                InterruptedException
```
    抛出:
    
    org.apache.zookeeper.KeeperException
    
    InterruptedException
  - registerCloudCollectionsListener
```
public void registerCloudCollectionsListener(CloudCollectionsListener cloudCollectionsListener)
```
    Register a CloudCollectionsListener to be called when the set of collections within a cloud changes.
  - removeCloudCollectionsListener
```
public void removeCloudCollectionsListener(CloudCollectionsListener cloudCollectionsListener)
```
    Remove a registered CloudCollectionsListener.
  - registerClusterPropertiesListener
```
public void registerClusterPropertiesListener(ClusterPropertiesListener listener)
```
  - removeClusterPropertiesListener
```
public void removeClusterPropertiesListener(ClusterPropertiesListener listener)
```
  - registerLiveNodesListener
```
public void registerLiveNodesListener(LiveNodesListener listener)
```
  - removeLiveNodesListener
```
public void removeLiveNodesListener(LiveNodesListener listener)
```
  - getClusterState
```
public ClusterState getClusterState()
```
    返回:
    
    information about the cluster from ZooKeeper
  - getUpdateLock
```
public Object getUpdateLock()
```
  - close
```
public void close()
```
    指定者:
    
    close 在接口中 Closeable
    
    指定者:
    
    close 在接口中 AutoCloseable
  - isClosed
```
public boolean isClosed()
```
    指定者:
    
    isClosed 在接口中 SolrCloseable
  - getLeaderUrl
```
public String getLeaderUrl(String collection,
                           String shard,
                           int timeout)
                    throws InterruptedException
```
    抛出:
    
    InterruptedException
  - getLeader
```
public Replica getLeader(Set<String> liveNodes,
                         DocCollection docCollection,
                         String shard)
```
  - getLeader
```
public Replica getLeader(String collection,
                         String shard)
```
  - isNodeLive
```
public boolean isNodeLive(String node)
```
  - getLeaderRetry
```
public Replica getLeaderRetry(String collection,
                              String shard)
                       throws InterruptedException
```
    Get shard leader properties, with retry if none exist.
    
    抛出:
    
    InterruptedException
  - getLeaderRetry
```
public Replica getLeaderRetry(String collection,
                              String shard,
                              int timeout)
                       throws InterruptedException
```
    Get shard leader properties, with retry if none exist.
    
    抛出:
    
    InterruptedException
  - getShardLeadersPath
```
public static String getShardLeadersPath(String collection,
                                         String shardId)
```
    Get path where shard leader properties live in zookeeper.
  - getShardLeadersElectPath
```
public static String getShardLeadersElectPath(String collection,
                                              String shardId)
```
    Get path where shard leader elections ephemeral nodes are.
  - getReplicaProps
```
public List<ZkCoreNodeProps> getReplicaProps(String collection,
                                             String shardId,
                                             String thisCoreNodeName)
```
  - getReplicaProps
```
public List<ZkCoreNodeProps> getReplicaProps(String collection,
                                             String shardId,
                                             String thisCoreNodeName,
                                             Replica.State mustMatchStateFilter)
```
  - getReplicaProps
```
public List<ZkCoreNodeProps> getReplicaProps(String collection,
                                             String shardId,
                                             String thisCoreNodeName,
                                             Replica.State mustMatchStateFilter,
                                             Replica.State mustNotMatchStateFilter)
```
  - getReplicaProps
```
public List<ZkCoreNodeProps> getReplicaProps(String collection,
                                             String shardId,
                                             String thisCoreNodeName,
                                             Replica.State mustMatchStateFilter,
                                             Replica.State mustNotMatchStateFilter,
                                             EnumSet<Replica.Type> acceptReplicaType)
```
  - getZkClient
```
public SolrZkClient getZkClient()
```
  - getClusterProperty
```
public <T> T getClusterProperty(String key,
                                T defaultValue)
```
    Get a cluster property
    N.B. Cluster properties are updated via ZK watchers, and so may not necessarily be completely up-to-date. If you need to get the latest version, then use a ClusterProperties instance.
    
    类型参数:
    
    T - the type of the property
    
    参数:
    
    key - the property to read
    
    defaultValue - a default value to use if no such property exists
    
    返回:
    
    the cluster property, or a default if the property is not set
  - getClusterProperty
```
public <T> T getClusterProperty(List<String> keyPath,
                                T defaultValue)
```
    Same as the above but allows a full json path as a list of parts
    
    参数:
    
    keyPath - path to the property example ["collectionDefauls", "numShards"]
    
    defaultValue - a default value to use if no such property exists
    
    返回:
    
    the cluster property, or a default if the property is not set
  - getClusterProperties
```
public Map<String,Object> getClusterProperties()
```
    Get all cluster properties for this cluster
    N.B. Cluster properties are updated via ZK watchers, and so may not necessarily be completely up-to-date. If you need to get the latest version, then use a ClusterProperties instance.
    
    返回:
    
    a Map of cluster properties
  - getCollectionProperties
```
public Map<String,String> getCollectionProperties(String collection)
```
    Get collection properties for a given collection. If the collection is watched, simply return it from the cache, otherwise fetch it directly from zookeeper. This is a convenience for getCollectionProperties(collection,0)
    
    参数:
    
    collection - the collection for which properties are desired
    
    返回:
    
    a map representing the key/value properties for the collection.
  - getCollectionProperties
```
public Map<String,String> getCollectionProperties(String collection,
                                                  long cacheForMillis)
```
    Get and cache collection properties for a given collection. If the collection is watched, or still cached simply return it from the cache, otherwise fetch it directly from zookeeper and retain the value for at least cacheForMillis milliseconds. Cached properties are watched in zookeeper and updated automatically. This version of getCollectionProperties should be used when properties need to be consulted frequently in the absence of an active CollectionPropsWatcher.
    
    参数:
    
    collection - The collection for which properties are desired
    
    cacheForMillis - The minimum number of milliseconds to maintain a cache for the specified collection's properties. Setting a CollectionPropsWatcher will override this value and retain the cache for the life of the watcher. A lack of changes in zookeeper may allow the caching to remain for a greater duration up to the cycle time of CacheCleaner. Passing zero for this value will explicitly remove the cached copy if and only if it is due to expire and no watch exists. Any positive value will extend the expiration time if required.
    
    返回:
    
    a map representing the key/value properties for the collection.
  - getSecurityProps
```
public ZkStateReader.ConfigData getSecurityProps(boolean getFresh)
```
    Returns the content of /security.json from ZooKeeper as a Map If the files doesn't exist, it returns null.
  - getBaseUrlForNodeName
```
public String getBaseUrlForNodeName(String nodeName)
```
    Returns the baseURL corresponding to a given node's nodeName -- NOTE: does not (currently) imply that the nodeName (or resulting baseURL) exists in the cluster.
  - getCollectionLive
```
public static DocCollection getCollectionLive(ZkStateReader zkStateReader,
                                              String coll)
```
  - fetchCollectionState
```
public DocCollection fetchCollectionState(String coll,
                                          org.apache.zookeeper.Watcher watcher,
                                          String path)
                                   throws org.apache.zookeeper.KeeperException,
                                          InterruptedException
```
    抛出:
    
    org.apache.zookeeper.KeeperException
    
    InterruptedException
  - getCollectionPathRoot
```
public static String getCollectionPathRoot(String coll)
```
  - getCollectionPath
```
public static String getCollectionPath(String coll)
```
  - registerCore
```
public void registerCore(String collection)
```
    Notify this reader that a local Core is a member of a collection, and so that collection state should be watched.
    Not a public API. This method should only be called from ZkController.
    The number of cores per-collection is tracked, and adding multiple cores from the same collection does not increase the number of watches.
    
    参数:
    
    collection - the collection that the core is a member of
    
    另请参阅:
    
    unregisterCore(String)
  - unregisterCore
```
public void unregisterCore(String collection)
```
    Notify this reader that a local core that is a member of a collection has been closed.
    Not a public API. This method should only be called from ZkController.
    If no cores are registered for a collection, and there are no CollectionStateWatchers for that collection either, the collection watch will be removed.
    
    参数:
    
    collection - the collection that the core belongs to
  - registerCollectionStateWatcher
```
public void registerCollectionStateWatcher(String collection,
                                           CollectionStateWatcher stateWatcher)
```
    Register a CollectionStateWatcher to be called when the state of a collection changes or the set of live nodes changes.
    The Watcher will automatically be removed when it's onStateChanged returns true
    
    This is method is just syntactic sugar for registering both a DocCollectionWatcher and a LiveNodesListener. Callers that only care about one or the other (but not both) are encouraged to use the more specific methods register methods as it may reduce the number of ZooKeeper watchers needed, and reduce the amount of network/cpu used.
    
    另请参阅:
    
    registerDocCollectionWatcher(java.lang.String, org.apache.solr.common.cloud.DocCollectionWatcher), registerLiveNodesListener(org.apache.solr.common.cloud.LiveNodesListener)
  - registerDocCollectionWatcher
```
public void registerDocCollectionWatcher(String collection,
                                         DocCollectionWatcher stateWatcher)
```
    Register a DocCollectionWatcher to be called when the state of a collection changes
    The Watcher will automatically be removed when it's onStateChanged returns true
  - waitForState
```
public void waitForState(String collection,
                         long wait,
                         TimeUnit unit,
                         CollectionStatePredicate predicate)
                  throws InterruptedException,
                         TimeoutException
```
    Block until a CollectionStatePredicate returns true, or the wait times out
    Note that the predicate may be called again even after it has returned true, so implementors should avoid changing state within the predicate call itself.
    
    This implementation utilizes CollectionStateWatcher internally. Callers that don't care about liveNodes are encouraged to use a DocCollection Predicate instead
    
    参数:
    
    collection - the collection to watch
    
    wait - how long to wait
    
    unit - the units of the wait parameter
    
    predicate - the predicate to call on state changes
    
    抛出:
    
    InterruptedException - on interrupt
    
    TimeoutException - on timeout
    
    另请参阅:
    
    waitForState(String, long, TimeUnit, Predicate), registerCollectionStateWatcher(java.lang.String, org.apache.solr.common.cloud.CollectionStateWatcher)
  - waitForState
```
public void waitForState(String collection,
                         long wait,
                         TimeUnit unit,
                         Predicate<DocCollection> predicate)
                  throws InterruptedException,
                         TimeoutException
```
    Block until a Predicate returns true, or the wait times out
    Note that the predicate may be called again even after it has returned true, so implementors should avoid changing state within the predicate call itself.
    
    参数:
    
    collection - the collection to watch
    
    wait - how long to wait
    
    unit - the units of the wait parameter
    
    predicate - the predicate to call on state changes
    
    抛出:
    
    InterruptedException - on interrupt
    
    TimeoutException - on timeout
  - waitForLiveNodes
```
public void waitForLiveNodes(long wait,
                             TimeUnit unit,
                             LiveNodesPredicate predicate)
                      throws InterruptedException,
                             TimeoutException
```
    Block until a LiveNodesStatePredicate returns true, or the wait times out
    Note that the predicate may be called again even after it has returned true, so implementors should avoid changing state within the predicate call itself.
    
    参数:
    
    wait - how long to wait
    
    unit - the units of the wait parameter
    
    predicate - the predicate to call on state changes
    
    抛出:
    
    InterruptedException - on interrupt
    
    TimeoutException - on timeout
  - removeCollectionStateWatcher
```
public void removeCollectionStateWatcher(String collection,
                                         CollectionStateWatcher watcher)
```
    Remove a watcher from a collection's watch list.
    This allows Zookeeper watches to be removed if there is no interest in the collection.
    
    参数:
    
    collection - the collection
    
    watcher - the watcher
    
    另请参阅:
    
    registerCollectionStateWatcher(java.lang.String, org.apache.solr.common.cloud.CollectionStateWatcher)
  - removeDocCollectionWatcher
```
public void removeDocCollectionWatcher(String collection,
                                       DocCollectionWatcher watcher)
```
    Remove a watcher from a collection's watch list.
    This allows Zookeeper watches to be removed if there is no interest in the collection.
    
    参数:
    
    collection - the collection
    
    watcher - the watcher
    
    另请参阅:
    
    registerDocCollectionWatcher(java.lang.String, org.apache.solr.common.cloud.DocCollectionWatcher)
  - registerCollectionPropsWatcher
```
public void registerCollectionPropsWatcher(String collection,
                                           CollectionPropsWatcher propsWatcher)
```
  - removeCollectionPropsWatcher
```
public void removeCollectionPropsWatcher(String collection,
                                         CollectionPropsWatcher watcher)
```
  - getAliases
```
public Aliases getAliases()
```
    Get an immutable copy of the present state of the aliases. References to this object should not be retained in any context where it will be important to know if aliases have changed.
    
    返回:
    
    The current aliases, Aliases.EMPTY if not solr cloud, or no aliases have existed yet. Never returns null.
  - getCollection
```
public DocCollection getCollection(String collection)
```

类 ZkStateReader

嵌套类概要

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

STATE_UPDATE_DELAY

BASE_URL_PROP

NODE_NAME_PROP

CORE_NODE_NAME_PROP

ROLES_PROP

STATE_PROP

FORCE_SET_STATE_PROP

CORE_NAME_PROP

COLLECTION_PROP

ELECTION_NODE_PROP

SHARD_ID_PROP

REPLICA_PROP

SHARD_RANGE_PROP

SHARD_STATE_PROP

SHARD_PARENT_PROP

NUM_SHARDS_PROP

LEADER_PROP

SHARED_STORAGE_PROP

PROPERTY_PROP

PROPERTY_PROP_PREFIX

PROPERTY_VALUE_PROP

MAX_AT_ONCE_PROP

MAX_WAIT_SECONDS_PROP

STATE_TIMESTAMP_PROP

COLLECTIONS_ZKNODE

LIVE_NODES_ZKNODE

ALIASES

CLUSTER_STATE

CLUSTER_PROPS

COLLECTION_PROPS_ZKNODE

REJOIN_AT_HEAD_PROP

SOLR_SECURITY_CONF_PATH

SOLR_AUTOSCALING_CONF_PATH

SOLR_AUTOSCALING_EVENTS_PATH

SOLR_AUTOSCALING_TRIGGER_STATE_PATH

SOLR_AUTOSCALING_NODE_ADDED_PATH

SOLR_AUTOSCALING_NODE_LOST_PATH

SOLR_PKGS_PATH

BLACKLIST

DEFAULT_SHARD_PREFERENCES

REPLICATION_FACTOR

MAX_SHARDS_PER_NODE

AUTO_ADD_REPLICAS

MAX_CORES_PER_NODE

PULL_REPLICAS

NRT_REPLICAS

TLOG_REPLICAS

READ_ONLY

TTL

STORAGE_POLICY

LOG_PATH

DEFAULT_CLUSTER_PROPS

ROLES

CONFIGS_ZKNODE

CONFIGNAME_PROP

LEGACY_CLOUD

SAMPLE_PERCENTAGE

COLLECTION_DEF

URL_SCHEME

REPLICA_TYPE

clusterState

LEADER_ELECT_ZKNODE

SHARD_LEADERS_ZKNODE

ELECTION_NODE

KNOWN_CLUSTER_PROPS

aliasesManager

构造器详细资料

ZkStateReader

ZkStateReader

ZkStateReader

方法详细资料

getAutoScalingConfig

getAutoScalingConfig