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From "Arun C Murthy (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-2666) MR-279: Need to retrieve shuffle port number on AplicationMaster restart
Date Tue, 04 Oct 2011 21:46:33 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2666?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun C Murthy updated MAPREDUCE-2666:
-------------------------------------

    Priority: Blocker  (was: Major)
    
> MR-279: Need to retrieve shuffle port number on AplicationMaster restart
> ------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2666
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2666
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Robert Joseph Evans
>            Assignee: Robert Joseph Evans
>            Priority: Blocker
>             Fix For: 0.23.0
>
>
> MAPREDUCE-2652 allows ShuffleHandler to return the port it is operating on.  In the case
of an ApplicationMaster crash where it needs to be restarted that information is lost.  We
either need to re-query it from each of the NodeManagers or to persist it to the JobHistory
logs and retrieve it again.  The job history logs is probably the simpler solution.

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