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Posted to mapreduce-issues@hadoop.apache.org by "Bochun Bai (JIRA)" <ji...@apache.org> on 2014/05/21 23:24:39 UTC

[jira] [Commented] (MAPREDUCE-2734) DistCp with FairScheduler assign all map tasks in one TT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14005256#comment-14005256 ] 

Bochun Bai commented on MAPREDUCE-2734:
---------------------------------------

I can find this config is default to false in 2.3.0. It is fixed in YARN-302.


> DistCp with FairScheduler assign all map tasks in one TT
> --------------------------------------------------------
>
>                 Key: MAPREDUCE-2734
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2734
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: jobtracker
>    Affects Versions: 0.21.0
>            Reporter: Bochun Bai
>            Assignee: Bochun Bai
>            Priority: Trivial
>             Fix For: 2.3.0
>
>
> 1 Using FairScheduler.
> 2 distcp a directory contains 5 files.
> The DistCp job will launch 5 map tasks, and FairScheduler assign them to one TaskTracker.
> It should be assigned different, like the original JobQueueScheduler.



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