Package org.apache.hadoop.yarn.client

Class AutoRefreshNoHARMFailoverProxyProvider<T>

java.lang.Object

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

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

All Implemented Interfaces:

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

@Private
@Unstable
public class AutoRefreshNoHARMFailoverProxyProvider<T>
extends DefaultNoHARMFailoverProxyProvider<T>

A subclass of RMFailoverProxyProvider which tries to resolve the proxy DNS in the event of failover. This provider doesn't support HA or Federation.

Nested Class Summary

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

org.apache.hadoop.io.retry.FailoverProxyProvider.ProxyInfo<T extends java.lang.Object>

Field Summary

Fields

Modifier and Type	Field	Description
protected org.apache.hadoop.yarn.conf.YarnConfiguration	conf
protected RMProxy<T>	rmProxy

Fields inherited from class org.apache.hadoop.yarn.client.DefaultNoHARMFailoverProxyProvider

protocol, proxy

Constructor Summary

Constructors

Constructor	Description
AutoRefreshNoHARMFailoverProxyProvider()

Method Summary

Modifier and Type	Method	Description
org.apache.hadoop.io.retry.FailoverProxyProvider.ProxyInfo<T>	getProxy()
protected T	getProxyInternal()
void	init(org.apache.hadoop.conf.Configuration configuration, RMProxy<T> rmProxy, java.lang.Class<T> protocol)	Initialize internal data structures, invoked right after instantiation.
void	performFailover(T currentProxy)	Stop the current proxy when performFailover.

Methods inherited from class org.apache.hadoop.yarn.client.DefaultNoHARMFailoverProxyProvider

close, getInterface

Methods inherited from class java.lang.Object

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

Field Detail

rmProxy

protected RMProxy<T> rmProxy

conf

protected org.apache.hadoop.yarn.conf.YarnConfiguration conf

Constructor Detail

AutoRefreshNoHARMFailoverProxyProvider

public AutoRefreshNoHARMFailoverProxyProvider()

Method Detail

init

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

Description copied from class: DefaultNoHARMFailoverProxyProvider

Initialize internal data structures, invoked right after instantiation.

Specified by:

init in interface RMFailoverProxyProvider<T>

Overrides:

init in class DefaultNoHARMFailoverProxyProvider<T>

Parameters:

configuration - Configuration to use

rmProxy - The RMProxy instance to use

protocol - The communication protocol to use

getProxy

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

Specified by:

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

Overrides:

getProxy in class DefaultNoHARMFailoverProxyProvider<T>

getProxyInternal

protected T getProxyInternal()

performFailover

public void performFailover(T currentProxy)

Stop the current proxy when performFailover.

Specified by:

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

Overrides:

performFailover in class DefaultNoHARMFailoverProxyProvider<T>

Parameters:

currentProxy - currentProxy.