org.apache.hadoop.yarn.client

Class MapRZKBasedRMFailoverProxyProvider<T>

java.lang.Object

org.apache.hadoop.yarn.client.MapRZKBasedRMFailoverProxyProvider<T>

Type Parameters:

T -

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, org.apache.hadoop.io.retry.FailoverProxyProvider<T>, org.apache.hadoop.yarn.client.RMFailoverProxyProvider<T>

public class MapRZKBasedRMFailoverProxyProvider<T>
extends java.lang.Object
implements org.apache.hadoop.yarn.client.RMFailoverProxyProvider<T>

Class implementing the MapR Zookeeper based RM Failover reconnect. When Warden starts ResourceManager, it publishes the host:port info in Zookeeper /services/resourcemanager/master znode. We use that info here to connect to RM instead of trying all nodes. When MapR's RM HA is configured, this class needs to be provided as the value for the property yarn.client.failover-proxy-provider in yarn-site.xml

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.io.retry.FailoverProxyProvider

org.apache.hadoop.io.retry.FailoverProxyProvider.ProxyInfo<T>

Constructor Summary

Constructors

Constructor and Description
MapRZKBasedRMFailoverProxyProvider()

Method Summary

Modifier and Type	Method and Description
void	close()
java.lang.Class<T>	getInterface()
org.apache.hadoop.io.retry.FailoverProxyProvider.ProxyInfo<T>	getProxy()
void	init(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.yarn.client.RMProxy<T> proxy, java.lang.Class<T> protocol)
void	performFailover(T currentProxy)

Methods inherited from class java.lang.Object

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

Constructor Detail

MapRZKBasedRMFailoverProxyProvider

public MapRZKBasedRMFailoverProxyProvider()

Method Detail

init

public void init(org.apache.hadoop.conf.Configuration conf,
                 org.apache.hadoop.yarn.client.RMProxy<T> proxy,
                 java.lang.Class<T> protocol)

Specified by:

init in interface org.apache.hadoop.yarn.client.RMFailoverProxyProvider<T>

getProxy

public org.apache.hadoop.io.retry.FailoverProxyProvider.ProxyInfo<T> getProxy()

Specified by:

getProxy in interface org.apache.hadoop.io.retry.FailoverProxyProvider<T>

performFailover

public void performFailover(T currentProxy)

Specified by:

performFailover in interface org.apache.hadoop.io.retry.FailoverProxyProvider<T>

getInterface

public java.lang.Class<T> getInterface()

Specified by:

getInterface in interface org.apache.hadoop.io.retry.FailoverProxyProvider<T>

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Throws:

java.io.IOException