org.apache.hadoop.mapreduce.jobhistory
Class JobHistoryCopyService

java.lang.Object
  org.apache.hadoop.service.AbstractService
      org.apache.hadoop.service.CompositeService
          org.apache.hadoop.mapreduce.jobhistory.JobHistoryCopyService

All Implemented Interfaces:

Closeable, org.apache.hadoop.mapreduce.jobhistory.HistoryEventHandler, org.apache.hadoop.service.Service

public class JobHistoryCopyService
extends org.apache.hadoop.service.CompositeService
implements org.apache.hadoop.mapreduce.jobhistory.HistoryEventHandler

Reads in history events from the JobHistoryFile and sends them out again to be recorded.

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

JobHistoryCopyService(org.apache.hadoop.yarn.api.records.ApplicationAttemptId applicationAttemptId, org.apache.hadoop.yarn.event.EventHandler handler)

Method Summary

static org.apache.hadoop.fs.FSDataInputStream	getPreviousJobHistoryFileStream(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.yarn.api.records.ApplicationAttemptId applicationAttemptId)
void	handleEvent(org.apache.hadoop.mapreduce.jobhistory.HistoryEvent event)
protected void	serviceInit(org.apache.hadoop.conf.Configuration conf)
protected void	serviceStart()

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

addIfService, addService, getServices, removeService, 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

JobHistoryCopyService

public JobHistoryCopyService(org.apache.hadoop.yarn.api.records.ApplicationAttemptId applicationAttemptId,
                             org.apache.hadoop.yarn.event.EventHandler handler)

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

handleEvent

public void handleEvent(org.apache.hadoop.mapreduce.jobhistory.HistoryEvent event)
                 throws IOException

Specified by:

handleEvent in interface org.apache.hadoop.mapreduce.jobhistory.HistoryEventHandler

Throws:

IOException

serviceStart

protected void serviceStart()
                     throws Exception

Overrides:

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

Throws:

Exception

getPreviousJobHistoryFileStream

public static org.apache.hadoop.fs.FSDataInputStream getPreviousJobHistoryFileStream(org.apache.hadoop.conf.Configuration conf,
                                                                                     org.apache.hadoop.yarn.api.records.ApplicationAttemptId applicationAttemptId)
                                                                              throws IOException

Throws:

IOException