org.apache.hadoop.hbase
Class ZKNamespaceManager

java.lang.Object
  org.apache.hadoop.hbase.zookeeper.ZooKeeperListener
      org.apache.hadoop.hbase.ZKNamespaceManager

@InterfaceAudience.Private
public class ZKNamespaceManager
extends ZooKeeperListener

Class servers two purposes: 1. Broadcast NamespaceDescriptor information via ZK (Done by the Master) 2. Consume broadcasted NamespaceDescriptor changes (Done by the RegionServers)

Field Summary

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

watcher

Constructor Summary

ZKNamespaceManager(ZooKeeperWatcher zkw)

Method Summary

NamespaceDescriptor	get(String name)
NavigableSet<NamespaceDescriptor>	list()
void	nodeChildrenChanged(String path)
void	nodeCreated(String path)
void	nodeDataChanged(String path)
void	nodeDeleted(String path)
void	remove(String name)
void	start()
void	update(NamespaceDescriptor ns)

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

getWatcher

Methods inherited from class java.lang.Object

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

Constructor Detail

ZKNamespaceManager

public ZKNamespaceManager(ZooKeeperWatcher zkw)
                   throws IOException

Throws:

IOException

Method Detail

start

public void start()
           throws IOException

Throws:

IOException

get

public NamespaceDescriptor get(String name)

update

public void update(NamespaceDescriptor ns)
            throws IOException

Throws:

IOException

remove

public void remove(String name)
            throws IOException

Throws:

IOException

list

public NavigableSet<NamespaceDescriptor> list()
                                       throws IOException

Throws:

IOException

nodeCreated

public void nodeCreated(String path)

Overrides:

nodeCreated in class ZooKeeperListener

nodeDeleted

public void nodeDeleted(String path)

Overrides:

nodeDeleted in class ZooKeeperListener

nodeDataChanged

public void nodeDataChanged(String path)

Overrides:

nodeDataChanged in class ZooKeeperListener

nodeChildrenChanged

public void nodeChildrenChanged(String path)

Overrides:

nodeChildrenChanged in class ZooKeeperListener