org.springframework.yarn.am
Class AbstractEventingAppmaster

java.lang.Object
  org.springframework.yarn.support.LifecycleObjectSupport
      org.springframework.yarn.am.AbstractAppmaster
          org.springframework.yarn.am.AbstractServicesAppmaster
              org.springframework.yarn.am.AbstractEventingAppmaster

All Implemented Interfaces:

java.util.EventListener, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.InitializingBean, org.springframework.context.ApplicationListener<AbstractYarnEvent>, org.springframework.context.Lifecycle, org.springframework.context.Phased, org.springframework.context.SmartLifecycle

Direct Known Subclasses:

AbstractBatchAppmaster, StaticEventingAppmaster

public abstract class AbstractEventingAppmaster
extends AbstractServicesAppmaster
implements org.springframework.context.ApplicationListener<AbstractYarnEvent>

Base implementation of application master where life-cycle is based on events rather than a static information existing prior the start of an instance.

Life-cycle of this instance is not bound to information or states existing prior the startup of an application master. Containers can be requested and launched on demand and application master is then responsible to know when it's time to bail out and end the application.

Due to complex need of event communication, the actual event system is abstracted order to plug different systems for a need of various use cases.

Author:

Janne Valkealahti

Constructor Summary

AbstractEventingAppmaster()

Method Summary

void	onApplicationEvent(AbstractYarnEvent event)
protected void	onContainerAllocated(org.apache.hadoop.yarn.api.records.Container container) Invoked when ContainerAllocationEvent is received as an application event.
protected void	onContainerCompleted(org.apache.hadoop.yarn.api.records.ContainerStatus status) Invoked when ContainerCompletedEvent is received as an application event.
protected void	onContainerLaunched(org.apache.hadoop.yarn.api.records.Container container) Invoked when ContainerLaunchedEvent is received as an application event.

Methods inherited from class org.springframework.yarn.am.AbstractServicesAppmaster

getAllocator, getLauncher, getMonitor, setAllocator, setLauncher, setMonitor

Methods inherited from class org.springframework.yarn.am.AbstractAppmaster

addAppmasterStateListener, doStop, finishAppmaster, getApplicationAttemptId, getAppmasterClientService, getAppmasterService, getAppmasterTrackService, getCommands, getConfiguration, getContainerAssign, getEnvironment, getParameters, getResourceLocalizer, getTemplate, notifyCompleted, onInit, registerAppmaster, setCommands, setCommands, setConfiguration, setContainerAssign, setEnvironment, setFinalApplicationStatus, setParameters, setResourceLocalizer, setTemplate

Methods inherited from class org.springframework.yarn.support.LifecycleObjectSupport

afterPropertiesSet, doStart, getBeanFactory, getPhase, getTaskExecutor, getTaskScheduler, getYarnEventPublisher, isAutoStartup, isRunning, setAutoStartup, setBeanFactory, setPhase, setTaskExecutor, setTaskScheduler, setYarnEventPublisher, start, stop, stop

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractEventingAppmaster

public AbstractEventingAppmaster()

Method Detail

onApplicationEvent

public void onApplicationEvent(AbstractYarnEvent event)

Specified by:

onApplicationEvent in interface org.springframework.context.ApplicationListener<AbstractYarnEvent>

onContainerAllocated

protected void onContainerAllocated(org.apache.hadoop.yarn.api.records.Container container)

Invoked when ContainerAllocationEvent is received as an application event. Wrapped Container is passed to a method.

Parameters:

container - the container

onContainerLaunched

protected void onContainerLaunched(org.apache.hadoop.yarn.api.records.Container container)

Invoked when ContainerLaunchedEvent is received as an application event. Wrapped Container is passed to a method.

Parameters:

container - the container

onContainerCompleted

protected void onContainerCompleted(org.apache.hadoop.yarn.api.records.ContainerStatus status)

Invoked when ContainerCompletedEvent is received as an application event. Wrapped ContainerStatus is passed to a method.

Parameters:

status - the container status