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https://issues.apache.org/jira/browse/YARN-3798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14584548#comment-14584548
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Varun Saxena commented on YARN-3798:
------------------------------------
Anyways I will explain what happened as I had checked [~bibinchundatt]'s
environment and found that application node did exist in zookeeper which was up
but had thrown NoNode Exception.
# There are 2 zookeepers, zk1 and zk2. zk1 is initially up. Large number of
applications are running. There are almost 10k apps in ZK RM state store.
# RM creates app node for app1 by connecting to zk1.
# zk1 goes down and zk2 becomes leader.
# Few milliseconds later, update app attempt for app1 comes. RM tries to
connect to zk2 as zk1 is down.
# This happens before zk2 could sync the remaining data from zk1.
# As zk2 was in inconsistent state, it could not find app node for updating app
attempt and hence threw NoNode Exception.
# Because of NoNodeException, RM crashes.
# A few minutes later when I checked, the app node was present in zk2.
This is what lead to the conclusion that issue came because zk2 was out of
sync. And then I found about sync API so thought it may work.
Anyways we will have to catch the exception so that RM doesnt crash.
> RM shutdown with NoNode exception while updating appAttempt on zk
> -----------------------------------------------------------------
>
> Key: YARN-3798
> URL: https://issues.apache.org/jira/browse/YARN-3798
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Environment: Suse 11 Sp3
> Reporter: Bibin A Chundatt
> Assignee: Varun Saxena
>
> RM going down with NoNode exception during create of znode for appattempt
> *Please find the exception logs*
> {code}
> 2015-06-09 10:09:44,732 INFO
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore:
> ZKRMStateStore Session connected
> 2015-06-09 10:09:44,732 INFO
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore:
> ZKRMStateStore Session restored
> 2015-06-09 10:09:44,886 INFO
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore:
> Exception while executing a ZK operation.
> org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:115)
> at org.apache.zookeeper.ZooKeeper.multiInternal(ZooKeeper.java:1405)
> at org.apache.zookeeper.ZooKeeper.multi(ZooKeeper.java:1310)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$4.run(ZKRMStateStore.java:926)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$4.run(ZKRMStateStore.java:923)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$ZKAction.runWithCheck(ZKRMStateStore.java:1101)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$ZKAction.runWithRetries(ZKRMStateStore.java:1122)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.doStoreMultiWithRetries(ZKRMStateStore.java:923)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.doStoreMultiWithRetries(ZKRMStateStore.java:937)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.createWithRetries(ZKRMStateStore.java:970)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.updateApplicationAttemptStateInternal(ZKRMStateStore.java:671)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$UpdateAppAttemptTransition.transition(RMStateStore.java:275)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$UpdateAppAttemptTransition.transition(RMStateStore.java:260)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory$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:837)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:900)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:895)
> at
> org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:175)
> at
> org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:108)
> at java.lang.Thread.run(Thread.java:745)
> 2015-06-09 10:09:44,887 INFO
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore: Maxed
> out ZK retries. Giving up!
> 2015-06-09 10:09:44,887 ERROR
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore: Error
> updating appAttempt: appattempt_1433764310492_7152_000001
> org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:115)
> at org.apache.zookeeper.ZooKeeper.multiInternal(ZooKeeper.java:1405)
> at org.apache.zookeeper.ZooKeeper.multi(ZooKeeper.java:1310)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$4.run(ZKRMStateStore.java:926)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$4.run(ZKRMStateStore.java:923)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$ZKAction.runWithCheck(ZKRMStateStore.java:1101)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$ZKAction.runWithRetries(ZKRMStateStore.java:1122)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.doStoreMultiWithRetries(ZKRMStateStore.java:923)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.doStoreMultiWithRetries(ZKRMStateStore.java:937)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.createWithRetries(ZKRMStateStore.java:970)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.updateApplicationAttemptStateInternal(ZKRMStateStore.java:671)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$UpdateAppAttemptTransition.transition(RMStateStore.java:275)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$UpdateAppAttemptTransition.transition(RMStateStore.java:260)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory$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:837)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:900)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:895)
> at
> org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:175)
> at
> org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:108)
> at java.lang.Thread.run(Thread.java:745)
> 2015-06-09 10:09:44,898 INFO
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore: Updating
> info for app: application_1433764310492_7152
> 2015-06-09 10:09:44,898 FATAL
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Received a
> org.apache.hadoop.yarn.server.resourcemanager.RMFatalEvent of type
> STATE_STORE_OP_FAILED. Cause:
> org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:115)
> at org.apache.zookeeper.ZooKeeper.multiInternal(ZooKeeper.java:1405)
> at org.apache.zookeeper.ZooKeeper.multi(ZooKeeper.java:1310)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$4.run(ZKRMStateStore.java:926)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$4.run(ZKRMStateStore.java:923)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$ZKAction.runWithCheck(ZKRMStateStore.java:1101)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$ZKAction.runWithRetries(ZKRMStateStore.java:1122)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.doStoreMultiWithRetries(ZKRMStateStore.java:923)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.doStoreMultiWithRetries(ZKRMStateStore.java:937)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.createWithRetries(ZKRMStateStore.java:970)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.updateApplicationAttemptStateInternal(ZKRMStateStore.java:671)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$UpdateAppAttemptTransition.transition(RMStateStore.java:275)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$UpdateAppAttemptTransition.transition(RMStateStore.java:260)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory$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:837)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:900)
> at
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:895)
> at
> org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:175)
> at
> org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:108)
> at java.lang.Thread.run(Thread.java:745)
> 2015-06-09 10:09:44,920 INFO org.apache.hadoop.util.ExitUtil: Exiting with
> status 1
> {code}
> Zk leader process down has happened almost at the same time
> On startup of zk process znode for application was available
> *Current*
> RM going down and Job failure
> *Expected*
> Submitted Job can fail but RM shutdown i not required
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