org.springframework.yarn.am.allocate
Class AbstractPollingAllocator

java.lang.Object
  org.springframework.yarn.support.LifecycleObjectSupport
      org.springframework.yarn.am.allocate.AbstractAllocator
          org.springframework.yarn.am.allocate.AbstractPollingAllocator

All Implemented Interfaces:

org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.InitializingBean, org.springframework.context.Lifecycle, org.springframework.context.Phased, org.springframework.context.SmartLifecycle

Direct Known Subclasses:

DefaultContainerAllocator

public abstract class AbstractPollingAllocator
extends AbstractAllocator

Base implementation of allocator which is meant to handle allocation by doing a simple periodic polling against resource manager.

Author:

Janne Valkealahti

Constructor Summary

AbstractPollingAllocator()

Method Summary

protected abstract org.apache.hadoop.yarn.api.records.AMResponse	doContainerRequest() Subclasses needs to implements this method to do container requests against resource manager.
protected void	doStart() Subclasses may implement this method with the start behavior.
protected void	doStop() Subclasses may implement this method with the stop behavior.
protected abstract void	handleAllocatedContainers(java.util.List<org.apache.hadoop.yarn.api.records.Container> containers) Subclasses needs to implement this method to handle newly allocated containers.
protected abstract void	handleCompletedContainers(java.util.List<org.apache.hadoop.yarn.api.records.ContainerStatus> containerStatuses) Subclasses needs to implement this method to handle newly released containers.
protected void	onInit() Subclasses may implement this for initialization logic.
protected java.util.List<org.apache.hadoop.yarn.api.records.Container>	preProcessAllocatedContainers(java.util.List<org.apache.hadoop.yarn.api.records.Container> containers) Pre process allocated containers.
void	setTrigger(org.springframework.scheduling.Trigger trigger) Sets Trigger used to trigger polling tasks.

Methods inherited from class org.springframework.yarn.am.allocate.AbstractAllocator

getApplicationAttemptId, getConfiguration, getEnvironment, getRmTemplate, setApplicationAttemptId, setConfiguration, setEnvironment, setRmTemplate

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

afterPropertiesSet, 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

AbstractPollingAllocator

public AbstractPollingAllocator()

Method Detail

setTrigger

public void setTrigger(org.springframework.scheduling.Trigger trigger)

Sets Trigger used to trigger polling tasks.

Parameters:

trigger - trigger to set

onInit

protected void onInit()
               throws java.lang.Exception

Description copied from class: LifecycleObjectSupport

Subclasses may implement this for initialization logic. Called during the InitializingBean phase. Implementor should always call super method not to break initialization chain.

Overrides:

onInit in class AbstractAllocator

Throws:

java.lang.Exception

doStart

protected void doStart()

Description copied from class: LifecycleObjectSupport

Subclasses may implement this method with the start behavior. This method will be invoked while holding the LifecycleObjectSupport.lifecycleLock.

Overrides:

doStart in class LifecycleObjectSupport

doStop

protected void doStop()

Description copied from class: LifecycleObjectSupport

Subclasses may implement this method with the stop behavior. This method will be invoked while holding the LifecycleObjectSupport.lifecycleLock.

Overrides:

doStop in class LifecycleObjectSupport

doContainerRequest

protected abstract org.apache.hadoop.yarn.api.records.AMResponse doContainerRequest()

Subclasses needs to implements this method to do container requests against resource manager. This method is called during the polling cycle handled by this class. New containers and newly released containers are passed to methods handleAllocatedContainers(List) and handleCompletedContainers(List).

Returns:

AMResponse from a resource manager

preProcessAllocatedContainers

protected java.util.List<org.apache.hadoop.yarn.api.records.Container> preProcessAllocatedContainers(java.util.List<org.apache.hadoop.yarn.api.records.Container> containers)

Pre process allocated containers. Allows implementors to intercept containers before further processing is done. Default implementation returns list as it is.

Parameters:

containers - the containers

Returns:

the list of containers

handleAllocatedContainers

protected abstract void handleAllocatedContainers(java.util.List<org.apache.hadoop.yarn.api.records.Container> containers)

Subclasses needs to implement this method to handle newly allocated containers.

Parameters:

containers - list of newly allocate containers

handleCompletedContainers

protected abstract void handleCompletedContainers(java.util.List<org.apache.hadoop.yarn.api.records.ContainerStatus> containerStatuses)

Subclasses needs to implement this method to handle newly released containers.

Parameters:

containerStatuses - list of newly released containers