org.apache.hadoop.mapreduce.v2.app.local

Class LocalContainerAllocator

java.lang.Object

org.apache.hadoop.service.AbstractService

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

org.apache.hadoop.mapreduce.v2.app.local.LocalContainerAllocator

All Implemented Interfaces:

Closeable, AutoCloseable, ContainerAllocator, RMHeartbeatHandler, Service, EventHandler<ContainerAllocatorEvent>

public class LocalContainerAllocator
extends RMCommunicator
implements ContainerAllocator

Allocates containers locally. Doesn't allocate a real container; instead sends an allocated event for all requests.

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.service.Service

Service.STATE

Field Summary

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

allocatorThread, applicationACLs, applicationId, isSignalled, lastResponseID, scheduler

Constructor Summary

Constructors

Constructor and Description
LocalContainerAllocator(ClientService clientService, AppContext context, String nmHost, int nmPort, int nmHttpPort, ContainerId cId)

Method Summary

Methods

Modifier and Type	Method and Description
void	handle(ContainerAllocatorEvent event)
protected void	heartbeat()
protected void	serviceInit(Configuration conf) All initialization code needed by a service.

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

createSchedulerProxy, doUnregistration, getApplicationProgress, getContext, getJob, getLastHeartbeatTime, getMaxContainerCapability, register, runOnNextHeartbeat, serviceStart, serviceStop, setShouldUnregister, setSignalled, startAllocatorThread, 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

Constructor Detail

LocalContainerAllocator

public LocalContainerAllocator(ClientService clientService,
                       AppContext context,
                       String nmHost,
                       int nmPort,
                       int nmHttpPort,
                       ContainerId cId)

Method Detail

serviceInit

protected void serviceInit(Configuration conf)
                    throws Exception

Description copied from class: AbstractService

All initialization code needed by a service. This method will only ever be called once during the lifecycle of a specific service instance. Implementations do not need to be synchronized as the logic in AbstractService.init(Configuration) prevents re-entrancy. The base implementation checks to see if the subclass has created a new configuration instance, and if so, updates the base class value

Overrides:

serviceInit in class RMCommunicator

Parameters:

conf - configuration

Throws:

Exception - on a failure -these will be caught, possibly wrapped, and wil; trigger a service stop

heartbeat

protected void heartbeat()
                  throws Exception

Specified by:

heartbeat in class RMCommunicator

Throws:

Exception

handle

public void handle(ContainerAllocatorEvent event)

Specified by:

handle in interface EventHandler<ContainerAllocatorEvent>