| Class | Description | 
|---|---|
| EmptyWatcher | An empty ZooKeeper watcher | 
| HQuorumPeer | HBase's version of ZooKeeper's QuorumPeer. | 
| MasterAddressTracker | Manages the location of the current active Master for the RegionServer. | 
| MetaRegionTracker | Tracks the meta region server location node in zookeeper. | 
| RecoverableZooKeeper | A zookeeper that can handle 'recoverable' errors. | 
| ZKAssign | Utility class for doing region assignment in ZooKeeper. | 
| ZKClusterId | Publishes and synchronizes a unique identifier specific to a given HBase
 cluster. | 
| ZKConfig | Utility methods for reading, and building the ZooKeeper configuration. | 
| ZKLeaderManager | Deprecated Not used | 
| ZKTable | Helper class for table state tracking for use by AssignmentManager. | 
| ZKTableReadOnly | Non-instantiable class that provides helper functions for
 clients other than AssignmentManager for reading the
 state of a table in ZK. | 
| ZKUtil | Internal HBase utility class for ZooKeeper. | 
| ZKUtil.NodeAndData | Deprecated Unused | 
| ZKUtil.ZKUtilOp | Represents an action taken by ZKUtil, e.g. | 
| ZKUtil.ZKUtilOp.CreateAndFailSilent | ZKUtilOp representing createAndFailSilent in ZooKeeper
 (attempt to create node, ignore error if already exists) | 
| ZKUtil.ZKUtilOp.DeleteNodeFailSilent | ZKUtilOp representing deleteNodeFailSilent in ZooKeeper
 (attempt to delete node, ignore error if node doesn't exist) | 
| ZKUtil.ZKUtilOp.SetData | ZKUtilOp representing setData in ZooKeeper | 
| ZooKeeperListener | Base class for internal listeners of ZooKeeper events. | 
| ZooKeeperNodeTracker | Tracks the availability and value of a single ZooKeeper node. | 
| ZooKeeperWatcher | Acts as the single ZooKeeper Watcher. | 
Copyright © 2013 The Apache Software Foundation. All Rights Reserved.