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https://issues.apache.org/jira/browse/YARN-6107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16113838#comment-16113838
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stefanlee commented on YARN-6107:
---------------------------------
is there flink type application running in your cluster? this bug is fixed in
hadoop-2.6, you can reference [https://issues.apache.org/jira/browse/YARN-2823]
> ResourceManager recovered with NPE Exception due to zk store failed
> -------------------------------------------------------------------
>
> Key: YARN-6107
> URL: https://issues.apache.org/jira/browse/YARN-6107
> Project: Hadoop YARN
> Issue Type: Bug
> Components: yarn
> Affects Versions: 2.5.1
> Reporter: liuxiangwei
>
> Firstly, RM is stopped by the exception below:
> org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode
> = Session expired for /nmg01-khan-yarn-on-normandy-rmstore/ZKRM
> StateRoot/RMAppRoot/application_1484014091623_3711/appattempt_1484014091623_3711_000001
> at
> org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
> 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:960)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$8.run(ZKRMStateStore.java:957)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$ZKAction.runWithCheck(ZKRMStateStore.java:1007)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$ZKAction.runWithRetries(ZKRMStateStore.java:1026)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.existsWithRetries(ZKRMStateStore.java:957)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.updateApplicationAttemptStateInternal(ZKRMStateStore.java:65
> 4)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$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:774)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:845)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:840)
> 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:662)
> Secondly, Restart the RM but never success due to exception below:
> 2017-01-18 15:07:48,130 FATAL
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in
> handling event type APP_ATTEMPT_ADDED t
> o the scheduler
> java.lang.NullPointerException
> The stack trace points to the code blow:
> SchedulerApplication<FiCaSchedulerApp> application =
> applications.get(appAttemptId.getApplicationId());
> It seems application does not exist.
> And we found log like this
> 2017-01-18 15:11:21,204 INFO
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppImpl: Recovering
> app: application_1484014091623_3711 wi
> th 1 attempts and final state = FINISHED
> 2017-01-18 15:11:21,204 INFO
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl:
> Recovering attempt: appattempt_148
> 4014091623_3711_000001 with final state: null
> 2017-01-18 15:11:21,204 INFO
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl:
> appattempt_1484014091623_3711_0000
> 01 State change from NEW to LAUNCHED
> 2017-01-18 15:11:21,204 INFO
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppImpl:
> application_1484014091623_3711 State change from
> NEW to FINISHED
> the final states do not make equal.
> We have to check the application whether is null to avoid this problem and
> make this failover success.
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