org.apache.hadoop.yarn.server.nodemanager
Class NodeHealthCheckerService

java.lang.Object
  org.apache.hadoop.service.AbstractService
      org.apache.hadoop.service.CompositeService
          org.apache.hadoop.yarn.server.nodemanager.NodeHealthCheckerService

All Implemented Interfaces:

Closeable, org.apache.hadoop.service.Service

public class NodeHealthCheckerService
extends org.apache.hadoop.service.CompositeService

The class which provides functionality of checking the health of the node and reporting back to the service for which the health checker has been asked to report.

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

STOP_ONLY_STARTED_SERVICES

Constructor Summary

NodeHealthCheckerService()

Method Summary

LocalDirsHandlerService	getDiskHandler()
protected void	serviceInit(org.apache.hadoop.conf.Configuration conf)

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

addIfService, addService, getServices, removeService, serviceStart, serviceStop

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

NodeHealthCheckerService

public NodeHealthCheckerService()

Method Detail

serviceInit

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

Overrides:

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

Throws:

Exception

getDiskHandler

public LocalDirsHandlerService getDiskHandler()

Returns:

the disk handler