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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (MAPREDUCE-4299) Terasort hangs with MR2 FifoScheduler
Date Thu, 11 Oct 2012 17:50:37 GMT

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

Arun C Murthy closed MAPREDUCE-4299.
------------------------------------

    
> 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
>             Fix For: 0.23.3, 2.0.2-alpha
>
>         Attachments: MAPREDUCE-4299.patch, MAPREDUCE-4299.patch, 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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