org.apache.tez.dag.history
Class HistoryEventHandler

java.lang.Object
  org.apache.hadoop.service.AbstractService
      org.apache.hadoop.service.CompositeService
          org.apache.tez.dag.history.HistoryEventHandler

All Implemented Interfaces:

Closeable, org.apache.hadoop.service.Service

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

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

HistoryEventHandler(AppContext context)

Method Summary

void	handle(DAGHistoryEvent event)
void	handleCriticalEvent(DAGHistoryEvent event) Used by events that are critical for recovery DAG Submission/finished and any commit related activites are critical events In short, any events that are instances of SummaryEvent
boolean	hasRecoveryFailed()
void	serviceInit(org.apache.hadoop.conf.Configuration conf)
void	serviceStart()
void	serviceStop()

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

addIfService, addService, getServices, removeService

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

HistoryEventHandler

public HistoryEventHandler(AppContext context)

Method Detail

serviceInit

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

Overrides:

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

Throws:

Exception

serviceStart

public void serviceStart()
                  throws Exception

Overrides:

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

Throws:

Exception

serviceStop

public void serviceStop()
                 throws Exception

Overrides:

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

Throws:

Exception

handleCriticalEvent

public void handleCriticalEvent(DAGHistoryEvent event)
                         throws IOException

Used by events that are critical for recovery DAG Submission/finished and any commit related activites are critical events In short, any events that are instances of SummaryEvent

Parameters:

event - History event

Throws:

IOException

handle

public void handle(DAGHistoryEvent event)

hasRecoveryFailed

public boolean hasRecoveryFailed()