org.apache.hadoop.hbase.master.zksyncer

Class ClientZKSyncer

java.lang.Object

org.apache.hadoop.hbase.zookeeper.ZKListener

org.apache.hadoop.hbase.master.zksyncer.ClientZKSyncer

Direct Known Subclasses:

MasterAddressSyncer, MetaLocationSyncer

@InterfaceAudience.Private
public abstract class ClientZKSyncer
extends ZKListener

Tracks the target znode(s) on server ZK cluster and synchronize them to client ZK cluster if changed

The target znode(s) is given through getNodesToWatch() method

Field Summary

Fields inherited from class org.apache.hadoop.hbase.zookeeper.ZKListener

watcher

Constructor Summary

Constructors

Constructor and Description
ClientZKSyncer(ZKWatcher watcher, ZKWatcher clientZkWatcher, Server server)

Method Summary

Modifier and Type	Method and Description
void	nodeCreated(String path) Called when a new node has been created.
void	nodeDataChanged(String path) Called when an existing node has changed data.
void	nodeDeleted(String path) Called when a node has been deleted
void	start() Starts the syncer

Methods inherited from class org.apache.hadoop.hbase.zookeeper.ZKListener

getWatcher, nodeChildrenChanged

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ClientZKSyncer

public ClientZKSyncer(ZKWatcher watcher,
                      ZKWatcher clientZkWatcher,
                      Server server)

Method Detail

start

public void start()
           throws org.apache.zookeeper.KeeperException

Starts the syncer

Throws:

org.apache.zookeeper.KeeperException - if error occurs when trying to create base nodes on client ZK

nodeCreated

public void nodeCreated(String path)

Description copied from class: ZKListener

Called when a new node has been created.

Overrides:

nodeCreated in class ZKListener

Parameters:

path - full path of the new node

nodeDataChanged

public void nodeDataChanged(String path)

Description copied from class: ZKListener

Called when an existing node has changed data.

Overrides:

nodeDataChanged in class ZKListener

Parameters:

path - full path of the updated node

nodeDeleted

public void nodeDeleted(String path)

Description copied from class: ZKListener

Called when a node has been deleted

Overrides:

nodeDeleted in class ZKListener

Parameters:

path - full path of the deleted node