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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4299) Terasort hangs with MR2 FifoScheduler
Date Wed, 11 Jul 2012 01:13:35 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4299?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Tom White updated MAPREDUCE-4299:

    Assignee: Tom White
      Status: Patch Available  (was: Open)
> Terasort hangs with MR2 FifoScheduler
> -------------------------------------
>                 Key: MAPREDUCE-4299
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4299
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 2.0.0-alpha
>            Reporter: Tom White
>            Assignee: Tom White
>         Attachments: MAPREDUCE-4299.patch
> What happens is that the number of reducers ramp up until they occupy all of the job's
containers, at which point the maps no longer make any progress and the job hangs.
> When the same job is run with the CapacityScheduler it succeeds, so this looks like a
FifoScheduler bug.

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