org.apache.hadoop.yarn.server.resourcemanager.amlauncher

Class ApplicationMasterLauncher

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.yarn.server.resourcemanager.amlauncher.ApplicationMasterLauncher

All Implemented Interfaces:

Closeable, AutoCloseable, Service, EventHandler<AMLauncherEvent>

public class ApplicationMasterLauncher
extends AbstractService
implements EventHandler<AMLauncherEvent>

Nested Class Summary

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

Service.STATE

Field Summary

Fields

Modifier and Type	Field and Description
protected RMContext	context

Constructor Summary

Constructors

Constructor and Description
ApplicationMasterLauncher(RMContext context)

Method Summary

Methods

Modifier and Type	Method and Description
protected Runnable	createRunnableLauncher(RMAppAttempt application, AMLauncherEventType event)
void	handle(AMLauncherEvent appEvent)
protected void	serviceStart() Actions called during the INITED to STARTED transition.
protected void	serviceStop() Actions called during the transition to the STOPPED state.

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, serviceInit, 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

context

protected final RMContext context

Constructor Detail

ApplicationMasterLauncher

public ApplicationMasterLauncher(RMContext context)

Method Detail

serviceStart

protected void serviceStart()
                     throws Exception

Description copied from class: AbstractService

Actions called during the INITED to STARTED transition. 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.start() prevents re-entrancy.

Overrides:

serviceStart in class AbstractService

Throws:

Exception - if needed -these will be caught, wrapped, and trigger a service stop

createRunnableLauncher

protected Runnable createRunnableLauncher(RMAppAttempt application,
                              AMLauncherEventType event)

serviceStop

protected void serviceStop()
                    throws Exception

Description copied from class: AbstractService

Actions called during the transition to the STOPPED state. 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.stop() prevents re-entrancy. Implementations MUST write this to be robust against failures, including checks for null references -and for the first failure to not stop other attempts to shut down parts of the service.

Overrides:

serviceStop in class AbstractService

Throws:

Exception - if needed -these will be caught and logged.

handle

public void handle(AMLauncherEvent appEvent)

Specified by:

handle in interface EventHandler<AMLauncherEvent>