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From "gu-chi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3536) ZK exception occur when updating AppAttempt status, then NPE thrown when RM do recover
Date Thu, 23 Apr 2015 11:22:38 GMT

    [ https://issues.apache.org/jira/browse/YARN-3536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14508852#comment-14508852
] 

gu-chi commented on YARN-3536:
------------------------------

2015-04-21 03:52:31,395 | INFO  | AsyncDispatcher event handler | appattempt_1429597538411_0001_000002
State change from RUNNING to FINAL_SAVING | org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl.handle(RMAppAttemptImpl.java:704)
2015-04-21 03:52:31,397 | INFO  | AsyncDispatcher event handler | Updating application application_1429597538411_0001
with final state: FINISHING | org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppImpl.rememberTargetTransitionsAndStoreState(RMAppImpl.java:988)
2015-04-21 03:52:31,397 | WARN  | main-SendThread(VM1228:24002) | Session 0xd4cdaa0557f0005
for server VM1228/9.91.12.28:24002, unexpected error, closing socket connection and attempting
reconnect | org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1126)
java.io.IOException: Connection reset by peer
	at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
	at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
	at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
	at sun.nio.ch.IOUtil.read(IOUtil.java:192)
	at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379)
	at org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:68)
	at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:368)
	at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1105)
2015-04-21 03:52:31,499 | INFO  | AsyncDispatcher event handler | Exception while executing
a ZK operation. | org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$ZKAction.runWithRetries(ZKRMStateStore.java:1098)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss
for /rmstore/ZKRMStateRoot/RMAppRoot/application_1429597538411_0001/appattempt_1429597538411_0001_000002
	at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
	at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1045)
	at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1073)
	at org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$8.run(ZKRMStateStore.java:996)
	at org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$8.run(ZKRMStateStore.java:993)
	at org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$ZKAction.runWithCheck(ZKRMStateStore.java:1066)
	at org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$ZKAction.runWithRetries(ZKRMStateStore.java:1085)
	at org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.existsWithRetries(ZKRMStateStore.java:993)
	at org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.updateApplicationAttemptStateInternal(ZKRMStateStore.java:683)
	at org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$UpdateAppAttemptTransition.transition(RMStateStore.java:236)
	at org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$UpdateAppAttemptTransition.transition(RMStateStore.java:219)
	at org.apache.hadoop.yarn.state.StateMachineFactory$SingleInternalArc.doTransition(StateMachineFactory.java:362)
	at org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:302)
	at org.apache.hadoop.yarn.state.StateMachineFactory.access$300(StateMachineFactory.java:46)
	at org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:448)
	at org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore.handleStoreEvent(RMStateStore.java:792)
	at org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:866)
	at org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:861)
	at org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:173)
	at org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:106)
	at java.lang.Thread.run(Thread.java:745)

> ZK exception occur when updating AppAttempt status, then NPE thrown when RM do recover
> --------------------------------------------------------------------------------------
>
>                 Key: YARN-3536
>                 URL: https://issues.apache.org/jira/browse/YARN-3536
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler, resourcemanager
>    Affects Versions: 2.4.1
>            Reporter: gu-chi
>
> Here is a scenario that Application status is FAILED/FINISHED but AppAttempt status is
null, this cause NPE when doing recover with yarn.resourcemanager.work-preserving-recovery.enabled
set to true



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