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 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