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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2010) RM can't transition to active if it can't recover an app attempt
Date Wed, 28 May 2014 17:37:03 GMT

    [ https://issues.apache.org/jira/browse/YARN-2010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14011355#comment-14011355
] 

Jian He commented on YARN-2010:
-------------------------------

bq. The stack trace corresponds to non-work-preserving restart. I am not sure I understand
the concern.
What I meant is, in this scenario, it shouldn't matter whether the old attempt has the master
key or not, since the old attempt will be anyways killed by NM on RM restart. The newly started
attempt will have the proper master key generated. If we just check whether the key is null
and move on, the next attempt should be able to succeed. So we don't need to explicitly fail
the app ?

> RM can't transition to active if it can't recover an app attempt
> ----------------------------------------------------------------
>
>                 Key: YARN-2010
>                 URL: https://issues.apache.org/jira/browse/YARN-2010
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.3.0
>            Reporter: bc Wong
>            Assignee: Rohith
>            Priority: Critical
>         Attachments: YARN-2010.1.patch, YARN-2010.patch, yarn-2010-2.patch
>
>
> If the RM fails to recover an app attempt, it won't come up. We should make it more resilient.
> Specifically, the underlying error is that the app was submitted before Kerberos security
got turned on. Makes sense for the app to fail in this case. But YARN should still start.
> {noformat}
> 2014-04-11 11:56:37,216 WARN org.apache.hadoop.ha.ActiveStandbyElector: Exception handling
the winning of election 
> org.apache.hadoop.ha.ServiceFailedException: RM could not transition to Active 
> at org.apache.hadoop.yarn.server.resourcemanager.EmbeddedElectorService.becomeActive(EmbeddedElectorService.java:118)

> at org.apache.hadoop.ha.ActiveStandbyElector.becomeActive(ActiveStandbyElector.java:804)

> at org.apache.hadoop.ha.ActiveStandbyElector.processResult(ActiveStandbyElector.java:415)

> at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:599) 
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498) 
> Caused by: org.apache.hadoop.ha.ServiceFailedException: Error when transitioning to Active
mode 
> at org.apache.hadoop.yarn.server.resourcemanager.AdminService.transitionToActive(AdminService.java:274)

> at org.apache.hadoop.yarn.server.resourcemanager.EmbeddedElectorService.becomeActive(EmbeddedElectorService.java:116)

> ... 4 more 
> Caused by: org.apache.hadoop.service.ServiceStateException: org.apache.hadoop.yarn.exceptions.YarnException:
java.lang.IllegalArgumentException: Missing argument 
> at org.apache.hadoop.service.ServiceStateException.convert(ServiceStateException.java:59)

> at org.apache.hadoop.service.AbstractService.start(AbstractService.java:204) 
> at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.startActiveServices(ResourceManager.java:811)

> at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.transitionToActive(ResourceManager.java:842)

> at org.apache.hadoop.yarn.server.resourcemanager.AdminService.transitionToActive(AdminService.java:265)

> ... 5 more 
> Caused by: org.apache.hadoop.yarn.exceptions.YarnException: java.lang.IllegalArgumentException:
Missing argument 
> at org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.recoverApplication(RMAppManager.java:372)

> at org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.submitApplication(RMAppManager.java:273)

> at org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.recover(RMAppManager.java:406)

> at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.recover(ResourceManager.java:1000)

> at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceStart(ResourceManager.java:462)

> at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193) 
> ... 8 more 
> Caused by: java.lang.IllegalArgumentException: Missing argument 
> at javax.crypto.spec.SecretKeySpec.<init>(SecretKeySpec.java:93) 
> at org.apache.hadoop.security.token.SecretManager.createSecretKey(SecretManager.java:188)

> at org.apache.hadoop.yarn.server.resourcemanager.security.ClientToAMTokenSecretManagerInRM.registerMasterKey(ClientToAMTokenSecretManagerInRM.java:49)

> at org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl.recoverAppAttemptCredentials(RMAppAttemptImpl.java:711)

> at org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl.recover(RMAppAttemptImpl.java:689)

> at org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppImpl.recover(RMAppImpl.java:663)

> at org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.recoverApplication(RMAppManager.java:369)

> ... 13 more 
> {noformat}



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