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

Class RMCommunicator

java.lang.Object

org.apache.hadoop.yarn.service.AbstractService

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

All Implemented Interfaces:

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

Direct Known Subclasses:

LocalContainerAllocator, RMContainerRequestor

public abstract class RMCommunicator
extends org.apache.hadoop.yarn.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.yarn.service.Service

org.apache.hadoop.yarn.service.Service.STATE

Field Summary

Fields

Modifier and Type	Field and Description
protected Thread	allocatorThread
protected Map<org.apache.hadoop.yarn.api.records.ApplicationAccessType,String>	applicationACLs
protected org.apache.hadoop.yarn.api.records.ApplicationAttemptId	applicationAttemptId
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.AMRMProtocol	scheduler

Constructor Summary

Constructors

Constructor and Description
RMCommunicator(ClientService clientService, AppContext context)

Method Summary

Methods

Modifier and Type	Method and Description
protected org.apache.hadoop.yarn.api.AMRMProtocol	createSchedulerProxy()
protected float	getApplicationProgress() Get the appProgress.
protected AppContext	getContext()
protected Job	getJob()
long	getLastHeartbeatTime()
protected org.apache.hadoop.yarn.api.records.Resource	getMaxContainerCapability()
protected org.apache.hadoop.yarn.api.records.Resource	getMinContainerCapability()
protected abstract void	heartbeat()
void	init(org.apache.hadoop.conf.Configuration conf)
protected void	register()
void	runOnNextHeartbeat(Runnable callback)
void	setShouldUnregister(boolean shouldUnregister)
void	setSignalled(boolean isSignalled)
void	start()
protected void	startAllocatorThread()
void	stop()
protected void	unregister()

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

getConfig, getName, getServiceState, getStartTime, register, unregister

Methods inherited from class java.lang.Object

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

Field Detail

applicationId

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

applicationAttemptId

protected org.apache.hadoop.yarn.api.records.ApplicationAttemptId applicationAttemptId

allocatorThread

protected Thread allocatorThread

eventHandler

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

scheduler

protected org.apache.hadoop.yarn.api.AMRMProtocol 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

init

public void init(org.apache.hadoop.conf.Configuration conf)

Specified by:

init in interface org.apache.hadoop.yarn.service.Service

Overrides:

init in class org.apache.hadoop.yarn.service.AbstractService

start

public void start()

Specified by:

start in interface org.apache.hadoop.yarn.service.Service

Overrides:

start in class org.apache.hadoop.yarn.service.AbstractService

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()

getMinContainerCapability

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

getMaxContainerCapability

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

stop

public void stop()

Specified by:

stop in interface org.apache.hadoop.yarn.service.Service

Overrides:

stop in class org.apache.hadoop.yarn.service.AbstractService

startAllocatorThread

protected void startAllocatorThread()

createSchedulerProxy

protected org.apache.hadoop.yarn.api.AMRMProtocol 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)