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From "Arun C Murthy (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3034) NM should act on a REBOOT command from RM
Date Tue, 06 Mar 2012 00:49:57 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3034?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13222838#comment-13222838

Arun C Murthy commented on MAPREDUCE-3034:

+1, thanks for the update Vinod.

The MR1 test failures are unrelated and seem like a temp. blip... all are of the form:

org.apache.hadoop.util.Shell$ExitCodeException: chmod: cannot access `/tmp/hadoop-jenkins/mapred/staging/jenkins755067366/.staging/job_local_0001':
No such file or directory


> NM should act on a REBOOT command from RM
> -----------------------------------------
>                 Key: MAPREDUCE-3034
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3034
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2, nodemanager
>    Affects Versions: 0.23.0
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Devaraj K
>            Priority: Critical
>             Fix For: 0.23.2
>         Attachments: MAPREDUCE-3034-1.patch, MAPREDUCE-3034-2.patch, MAPREDUCE-3034-20120305.1.txt,
MAPREDUCE-3034-20120305.txt, MAPREDUCE-3034-3.patch, MAPREDUCE-3034-4.patch, MAPREDUCE-3034-5.patch,
MAPREDUCE-3034.patch, MR-3034.txt
> RM sends a reboot command to NM in some cases, like when it gets lost and rejoins back.
In such a case, NM should act on the command and reboot/reinitalize itself.
> This is akin to TT reinitialize on order from JT. We will need to shutdown all the services
properly and reinitialize - this should automatically take care of killing of containers,
cleaning up local temporary files etc.

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