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

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

All Implemented Interfaces:

ContainerAllocator, org.apache.hadoop.yarn.event.EventHandler<ContainerAllocatorEvent>, org.apache.hadoop.yarn.service.Service

public class RMContainerAllocator
extends RMContainerRequestor
implements ContainerAllocator

Allocates the container from the ResourceManager scheduler.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.mapreduce.v2.app.rm.ContainerAllocator

ContainerAllocator.EventType

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

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

Field Summary

static float

DEFAULT_COMPLETED_MAPS_PERCENT_FOR_REDUCE_SLOWSTART

Fields inherited from class org.apache.hadoop.mapreduce.v2.app.rm.RMCommunicator

allocatorThread, applicationACLs, applicationAttemptId, applicationId, eventHandler, scheduler

Constructor Summary

RMContainerAllocator(ClientService clientService, AppContext context)

Method Summary

boolean	getIsReduceStarted()
int	getMemLimit()
void	handle(ContainerAllocatorEvent event)
protected void	handleEvent(ContainerAllocatorEvent event)
protected void	heartbeat()
void	init(org.apache.hadoop.conf.Configuration conf)
void	rampDownReduces(int rampDown)
void	rampUpReduces(int rampUp)
void	scheduleReduces(int totalMaps, int completedMaps, int scheduledMaps, int scheduledReduces, int assignedMaps, int assignedReduces, int mapResourceReqt, int reduceResourceReqt, int numPendingReduces, float maxReduceRampupLimit, float reduceSlowStart)
void	setIsReduceStarted(boolean reduceStarted)
void	start()
void	stop()

Methods inherited from class org.apache.hadoop.mapreduce.v2.app.rm.RMContainerRequestor

addContainerReq, computeIgnoreBlacklisting, containerFailedOnHost, decContainerReq, getAvailableResources, getFilteredContainerRequest, isNodeBlacklisted, makeRemoteRequest, release

Methods inherited from class org.apache.hadoop.mapreduce.v2.app.rm.RMCommunicator

createSchedulerProxy, getApplicationProgress, getContext, getJob, getMaxContainerCapability, getMinContainerCapability, register, startAllocatorThread, 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

DEFAULT_COMPLETED_MAPS_PERCENT_FOR_REDUCE_SLOWSTART

public static final float DEFAULT_COMPLETED_MAPS_PERCENT_FOR_REDUCE_SLOWSTART

See Also:

Constant Field Values

Constructor Detail

RMContainerAllocator

public RMContainerAllocator(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 RMContainerRequestor

start

public void start()

Specified by:

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

Overrides:

start in class RMCommunicator

heartbeat

protected void heartbeat()
                  throws Exception

Specified by:

heartbeat in class RMCommunicator

Throws:

Exception

stop

public void stop()

Specified by:

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

Overrides:

stop in class RMCommunicator

getIsReduceStarted

public boolean getIsReduceStarted()

setIsReduceStarted

public void setIsReduceStarted(boolean reduceStarted)

handle

public void handle(ContainerAllocatorEvent event)

Specified by:

handle in interface org.apache.hadoop.yarn.event.EventHandler<ContainerAllocatorEvent>

handleEvent

protected void handleEvent(ContainerAllocatorEvent event)

scheduleReduces

@InterfaceAudience.Private
public void scheduleReduces(int totalMaps,
                                                      int completedMaps,
                                                      int scheduledMaps,
                                                      int scheduledReduces,
                                                      int assignedMaps,
                                                      int assignedReduces,
                                                      int mapResourceReqt,
                                                      int reduceResourceReqt,
                                                      int numPendingReduces,
                                                      float maxReduceRampupLimit,
                                                      float reduceSlowStart)

rampUpReduces

@InterfaceAudience.Private
public void rampUpReduces(int rampUp)

rampDownReduces

@InterfaceAudience.Private
public void rampDownReduces(int rampDown)

getMemLimit

@InterfaceAudience.Private
public int getMemLimit()