org.apache.hadoop.yarn.server.resourcemanager
Class EmbeddedElectorService

java.lang.Object
  org.apache.hadoop.service.AbstractService
      org.apache.hadoop.yarn.server.resourcemanager.EmbeddedElectorService

All Implemented Interfaces:

Closeable, org.apache.hadoop.ha.ActiveStandbyElector.ActiveStandbyElectorCallback, org.apache.hadoop.service.Service

@InterfaceAudience.Private
@InterfaceStability.Unstable
public class EmbeddedElectorService
extends org.apache.hadoop.service.AbstractService
implements org.apache.hadoop.ha.ActiveStandbyElector.ActiveStandbyElectorCallback

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.service.Service

org.apache.hadoop.service.Service.STATE

Method Summary

void	becomeActive()
void	becomeStandby()
void	enterNeutralMode()
void	fenceOldActive(byte[] oldActiveData)
void	notifyFatalError(String errorMessage)
void	resetLeaderElection()
protected void	serviceInit(org.apache.hadoop.conf.Configuration conf)
protected void	serviceStart()
protected void	serviceStop()

Methods inherited from class org.apache.hadoop.service.AbstractService

close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, noteFailure, putBlocker, registerGlobalListener, registerServiceListener, removeBlocker, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop

Methods inherited from class java.lang.Object

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

Method Detail

serviceInit

protected void serviceInit(org.apache.hadoop.conf.Configuration conf)
                    throws Exception

Overrides:

serviceInit in class org.apache.hadoop.service.AbstractService

Throws:

Exception

serviceStart

protected void serviceStart()
                     throws Exception

Overrides:

serviceStart in class org.apache.hadoop.service.AbstractService

Throws:

Exception

serviceStop

protected void serviceStop()
                    throws Exception

Overrides:

serviceStop in class org.apache.hadoop.service.AbstractService

Throws:

Exception

becomeActive

public void becomeActive()
                  throws org.apache.hadoop.ha.ServiceFailedException

Specified by:

becomeActive in interface org.apache.hadoop.ha.ActiveStandbyElector.ActiveStandbyElectorCallback

Throws:

org.apache.hadoop.ha.ServiceFailedException

becomeStandby

public void becomeStandby()

Specified by:

becomeStandby in interface org.apache.hadoop.ha.ActiveStandbyElector.ActiveStandbyElectorCallback

enterNeutralMode

public void enterNeutralMode()

Specified by:

enterNeutralMode in interface org.apache.hadoop.ha.ActiveStandbyElector.ActiveStandbyElectorCallback

notifyFatalError

public void notifyFatalError(String errorMessage)

Specified by:

notifyFatalError in interface org.apache.hadoop.ha.ActiveStandbyElector.ActiveStandbyElectorCallback

fenceOldActive

public void fenceOldActive(byte[] oldActiveData)

Specified by:

fenceOldActive in interface org.apache.hadoop.ha.ActiveStandbyElector.ActiveStandbyElectorCallback

resetLeaderElection

public void resetLeaderElection()