Package org.apache.hadoop.yarn.server.sharedcachemanager

Class SharedCacheManager

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.service.CompositeService

org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, org.apache.hadoop.service.Service

@Private
@Unstable
public class SharedCacheManager
extends org.apache.hadoop.service.CompositeService

This service maintains the shared cache meta data. It handles claiming and releasing of resources, all rpc calls from the client to the shared cache manager, and administrative commands. It also persists the shared cache meta data to a backend store, and cleans up stale entries on a regular basis.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.service.CompositeService

org.apache.hadoop.service.CompositeService.CompositeServiceShutdownHook

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

org.apache.hadoop.service.Service.STATE

Field Summary

Fields

Modifier and Type	Field	Description
static int	SHUTDOWN_HOOK_PRIORITY	Priority of the SharedCacheManager shutdown hook.

Fields inherited from class org.apache.hadoop.service.CompositeService

STOP_ONLY_STARTED_SERVICES

Constructor Summary

Constructors

Constructor	Description
SharedCacheManager()

Method Summary

Modifier and Type	Method	Description
static void	main(java.lang.String[] args)
protected void	serviceInit(org.apache.hadoop.conf.Configuration conf)
protected void	serviceStop()

Methods inherited from class org.apache.hadoop.service.CompositeService

addIfService, addService, getServices, removeService, serviceStart

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

Field Detail

SHUTDOWN_HOOK_PRIORITY

public static final int SHUTDOWN_HOOK_PRIORITY

Priority of the SharedCacheManager shutdown hook.

See Also:

Constant Field Values

Constructor Detail

SharedCacheManager

public SharedCacheManager()

Method Detail

serviceInit

protected void serviceInit(org.apache.hadoop.conf.Configuration conf)
                    throws java.lang.Exception

Overrides:

serviceInit in class org.apache.hadoop.service.CompositeService

Throws:

java.lang.Exception

serviceStop

protected void serviceStop()
                    throws java.lang.Exception

Overrides:

serviceStop in class org.apache.hadoop.service.CompositeService

Throws:

java.lang.Exception

main

public static void main(java.lang.String[] args)