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Posted to mapreduce-issues@hadoop.apache.org by "Yang Hao (JIRA)" <ji...@apache.org> on 2015/01/26 08:40:37 UTC

[jira] [Commented] (MAPREDUCE-5718) MR AM should tolerate RM restart/failover during commit

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14291542#comment-14291542 ] 

Yang Hao commented on MAPREDUCE-5718:
-------------------------------------

This will also happen when the AM is preempted

> MR AM should tolerate RM restart/failover during commit
> -------------------------------------------------------
>
>                 Key: MAPREDUCE-5718
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5718
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mr-am
>    Affects Versions: 2.3.0
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>              Labels: ha
>         Attachments: mr-5718-0.patch
>
>
> While testing RM HA, we ran into this issue where if the RM fails over while an MR AM is in the middle of a commit, the subsequent AM gets spawned but dies with a diagnostic message - "We crashed durring a commit". 



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