org.apache.hadoop.mapreduce.v2.app.rm
Class RMCommunicator

java.lang.Object
  org.apache.hadoop.service.AbstractService
      org.apache.hadoop.mapreduce.v2.app.rm.RMCommunicator

All Implemented Interfaces:

Closeable, RMHeartbeatHandler, org.apache.hadoop.service.Service

Direct Known Subclasses:

LocalContainerAllocator, RMContainerRequestor

public abstract class RMCommunicator
extends org.apache.hadoop.service.AbstractService
implements RMHeartbeatHandler

Registers/unregisters to RM and sends heartbeats to RM.

Nested Class Summary

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

org.apache.hadoop.service.Service.STATE

Field Summary

protected Thread	allocatorThread
protected Map<org.apache.hadoop.yarn.api.records.ApplicationAccessType,String>	applicationACLs
protected org.apache.hadoop.yarn.api.records.ApplicationId	applicationId
protected org.apache.hadoop.yarn.event.EventHandler	eventHandler
protected boolean	isSignalled
protected int	lastResponseID
protected org.apache.hadoop.yarn.api.ApplicationMasterProtocol	scheduler

Constructor Summary

RMCommunicator(ClientService clientService, AppContext context)

Method Summary

protected org.apache.hadoop.yarn.api.ApplicationMasterProtocol	createSchedulerProxy()
protected void	doUnregistration()
protected float	getApplicationProgress() Get the appProgress.
protected AppContext	getContext()
protected Job	getJob()
long	getLastHeartbeatTime()
protected org.apache.hadoop.yarn.api.records.Resource	getMaxContainerCapability()
protected abstract void	heartbeat()
protected void	register()
void	runOnNextHeartbeat(Runnable callback)
protected void	serviceInit(org.apache.hadoop.conf.Configuration conf)
protected void	serviceStart()
protected void	serviceStop()
void	setShouldUnregister(boolean shouldUnregister)
void	setSignalled(boolean isSignalled)
protected void	startAllocatorThread()
protected void	unregister()

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

Field Detail

applicationId

protected org.apache.hadoop.yarn.api.records.ApplicationId applicationId

allocatorThread

protected Thread allocatorThread

eventHandler

protected org.apache.hadoop.yarn.event.EventHandler eventHandler

scheduler

protected org.apache.hadoop.yarn.api.ApplicationMasterProtocol scheduler

lastResponseID

protected int lastResponseID

applicationACLs

protected Map<org.apache.hadoop.yarn.api.records.ApplicationAccessType,String> applicationACLs

isSignalled

protected volatile boolean isSignalled

Constructor Detail

RMCommunicator

public RMCommunicator(ClientService clientService,
                      AppContext context)

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

getContext

protected AppContext getContext()

getJob

protected Job getJob()

getApplicationProgress

protected float getApplicationProgress()

Get the appProgress. Can be used only after this component is started.

Returns:

the appProgress.

register

protected void register()

unregister

protected void unregister()

doUnregistration

protected void doUnregistration()
                         throws org.apache.hadoop.yarn.exceptions.YarnException,
                                IOException,
                                InterruptedException

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

InterruptedException

getMaxContainerCapability

protected org.apache.hadoop.yarn.api.records.Resource getMaxContainerCapability()

serviceStop

protected void serviceStop()
                    throws Exception

Overrides:

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

Throws:

Exception

startAllocatorThread

protected void startAllocatorThread()

createSchedulerProxy

protected org.apache.hadoop.yarn.api.ApplicationMasterProtocol createSchedulerProxy()

heartbeat

protected abstract void heartbeat()
                           throws Exception

Throws:

Exception

getLastHeartbeatTime

public long getLastHeartbeatTime()

Specified by:

getLastHeartbeatTime in interface RMHeartbeatHandler

runOnNextHeartbeat

public void runOnNextHeartbeat(Runnable callback)

Specified by:

runOnNextHeartbeat in interface RMHeartbeatHandler

setShouldUnregister

public void setShouldUnregister(boolean shouldUnregister)

setSignalled

public void setSignalled(boolean isSignalled)