org.apache.tez.dag.history.recovery

Class RecoveryService

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.tez.dag.history.recovery.RecoveryService

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.service.Service

public class RecoveryService
extends org.apache.hadoop.service.AbstractService

Nested Class Summary

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

org.apache.hadoop.service.Service.STATE

Field Summary

Fields

Modifier and Type	Field and Description
static String	RECOVERY_FATAL_OCCURRED_DIR
static String	TEZ_AM_RECOVERY_HANDLE_REMAINING_EVENT_WHEN_STOPPED whether to handle remaining event in the eventqueue when AM is stopped
static boolean	TEZ_AM_RECOVERY_HANDLE_REMAINING_EVENT_WHEN_STOPPED_DEFAULT by default do not handle remaining event when AM is stopped.

Constructor Summary

Constructors

Constructor and Description
RecoveryService(AppContext appContext)

Method Summary

Methods

Modifier and Type	Method and Description
void	handle(DAGHistoryEvent event)
boolean	hasRecoveryFailed()
void	serviceInit(org.apache.hadoop.conf.Configuration conf)
void	serviceStart()
void	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

Field Detail

RECOVERY_FATAL_OCCURRED_DIR

public static final String RECOVERY_FATAL_OCCURRED_DIR

See Also:

Constant Field Values

TEZ_AM_RECOVERY_HANDLE_REMAINING_EVENT_WHEN_STOPPED

public static final String TEZ_AM_RECOVERY_HANDLE_REMAINING_EVENT_WHEN_STOPPED

whether to handle remaining event in the eventqueue when AM is stopped

See Also:

Constant Field Values

TEZ_AM_RECOVERY_HANDLE_REMAINING_EVENT_WHEN_STOPPED_DEFAULT

public static final boolean TEZ_AM_RECOVERY_HANDLE_REMAINING_EVENT_WHEN_STOPPED_DEFAULT

by default do not handle remaining event when AM is stopped. Most of time, true is for recovery unit test

See Also:

Constant Field Values

Constructor Detail

RecoveryService

public RecoveryService(AppContext appContext)

Method Detail

serviceInit

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

Overrides:

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

Throws:

Exception

serviceStart

public void serviceStart()

Overrides:

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

serviceStop

public void serviceStop()

Overrides:

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

handle

public void handle(DAGHistoryEvent event)
            throws IOException

Throws:

IOException

hasRecoveryFailed

public boolean hasRecoveryFailed()