[jira] [Commented] (TEZ-2674) Recover AM to shutdown when AM crashed before it unregister with RM

["Jeff Zhang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TEZ-2674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14651388#comment-14651388 ] 

Jeff Zhang commented on TEZ-2674:
---------------------------------

* Add AMKillRequestEvent for AM killing request from client side. And write it into a separated recovery file, since there's no dagId associated with the AM kill operation. 
* Remove the isSessionStopped from DAGKillRequestEvent because after introducing AMKillRequestEvent there is no necessary to record the AM shutdown event in DAGKillRequestEvent.

[~hitesh] Please help review it.   



> Recover AM to shutdown when AM crashed before it unregister with RM
> -------------------------------------------------------------------
>
>                 Key: TEZ-2674
>                 URL: https://issues.apache.org/jira/browse/TEZ-2674
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Jeff Zhang
>            Assignee: Jeff Zhang
>         Attachments: TEZ-2674-1.patch
>
>
> TEZ-2311 resolve it partially, but did not cover that case that AM crash before unregister with RM and no dag running at the same time. 



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