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From "Vinod Kumar Vavilapalli (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3596) Sort benchmark got hang after completion of 99% map phase
Date Fri, 13 Jan 2012 00:29:41 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3596?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13185356#comment-13185356
] 

Vinod Kumar Vavilapalli commented on MAPREDUCE-3596:
----------------------------------------------------

Thanks Robert.

And a very good catch Sid. Doing it on NM is more complicated with the heartbeat thread different
from the AMNM RPC. I am tending to do it on the RM itself inside the scheduler.
                
> Sort benchmark got hang after completion of 99% map phase
> ---------------------------------------------------------
>
>                 Key: MAPREDUCE-3596
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3596
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: applicationmaster, mrv2
>    Affects Versions: 0.23.0
>            Reporter: Ravi Prakash
>            Assignee: Vinod Kumar Vavilapalli
>            Priority: Blocker
>             Fix For: 0.23.1
>
>         Attachments: MAPREDUCE-3596-20120111.1.txt, MAPREDUCE-3596-20120111.txt, MAPREDUCE-3596-20120112.txt,
logs.tar.bz2, logs.tar.bz2
>
>
> Courtesy [~vinaythota]
> {quote}
> Ran sort benchmark couple of times and every time the job got hang after completion 99%
map phase. There are some map tasks failed. Also it's not scheduled some of the pending map
tasks.
> Cluster size is 350 nodes.
> Build Details:
> ==============
> Compiled:       Fri Dec 9 16:25:27 PST 2011 by someone from branches/branch-0.23/hadoop-common-project/hadoop-common

> ResourceManager version:        revision 1212681 by someone source checksum on Fri Dec
9 16:52:07 PST 2011
> Hadoop version:         revision 1212592 by someone Fri Dec 9 16:25:27 PST 2011
> {quote}

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