[jira] [Commented] (YARN-1365) ApplicationMasterService to allow Register and Unregister of an app that was running before restart

["Jian He (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-1365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14019574#comment-14019574 ] 

Jian He commented on YARN-1365:
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bq. The option is see is we pass in a flag to AppAttemptAddedSchedulerEvent that tells scheduler not to issue ATTEMPT_ADDED.
Makes sense. Anubhav, do you want to comment on YARN-1368 so that I can fix it or you want to include the fix here?

> ApplicationMasterService to allow Register and Unregister of an app that was running before restart
> ---------------------------------------------------------------------------------------------------
>
>                 Key: YARN-1365
>                 URL: https://issues.apache.org/jira/browse/YARN-1365
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Bikas Saha
>            Assignee: Anubhav Dhoot
>         Attachments: YARN-1365.001.patch, YARN-1365.002.patch, YARN-1365.003.patch, YARN-1365.initial.patch
>
>
> For an application that was running before restart, the ApplicationMasterService currently throws an exception when the app tries to make the initial register or final unregister call. These should succeed and the RMApp state machine should transition to completed like normal. Unregistration should succeed for an app that the RM considers complete since the RM may have died after saving completion in the store but before notifying the AM that the AM is free to exit.



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