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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1365) ApplicationMasterService to allow Register and Unregister of an app that was running before restart
Date Wed, 25 Jun 2014 04:53:25 GMT

    [ https://issues.apache.org/jira/browse/YARN-1365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14043039#comment-14043039
] 

Jian He commented on YARN-1365:
-------------------------------

opened YARN-2209  to use exceptions in allocate call instead of AM resync command to indicate
AM to re-register.

> 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
>             Fix For: 2.5.0
>
>         Attachments: YARN-1365.001.patch, YARN-1365.002.patch, YARN-1365.003.patch, YARN-1365.004.patch,
YARN-1365.005.patch, YARN-1365.005.patch, YARN-1365.006.patch, YARN-1365.007.patch, YARN-1365.008.patch,
YARN-1365.008.patch, YARN-1365.009.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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