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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4596) Split StateMachine state from states seen by MRClientProtocol (for Job, Task, TaskAttempt)
Date Mon, 27 Aug 2012 21:57:08 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4596?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13442752#comment-13442752
] 

Vinod Kumar Vavilapalli commented on MAPREDUCE-4596:
----------------------------------------------------

+1 for the proposal. Will look at the patch. Makes sense to do it on trunk too at the same
time as this.
                
> Split StateMachine state from states seen by MRClientProtocol (for Job, Task, TaskAttempt)
> ------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4596
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4596
>             Project: Hadoop Map/Reduce
>          Issue Type: Task
>          Components: applicationmaster, mrv2
>    Affects Versions: 0.23.0
>            Reporter: Siddharth Seth
>            Assignee: Siddharth Seth
>         Attachments: MR4596.txt
>
>
> State machine states are currently exposed via MRClienProtocol. This makes it tough to
modify the AM state machines, or have an alternate AM with different state machines (MR-3902)
without the changes being visible in MRClientProtocol (MRv2 equivalent of ClientProtocol).

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