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From "Hitesh Shah (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-3240) NM should send a SIGKILL for completed containers also
Date Tue, 25 Oct 2011 01:46:32 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3240?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hitesh Shah updated MAPREDUCE-3240:
-----------------------------------

    Attachment: MR-3240.1.patch

Worked around things slightly now to have setsid be invoked by the executors and not from
generated task.sh to address permission issues. 

Ran all tests locally on mac/linux dev box. Untested on secure cluster as of now. 
                
> NM should send a SIGKILL for completed containers also
> ------------------------------------------------------
>
>                 Key: MAPREDUCE-3240
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3240
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2, nodemanager
>    Affects Versions: 0.23.0
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Hitesh Shah
>         Attachments: MR-3240.1.patch, MR-3240.wip.patch
>
>
> This is to address the containers which exit properly after spawning sub-processes themselves.
We don't want to leave these sub-process-tree or else they can pillage the NM's resources.
> Today, we already have code to send SIGKILL to the whole process-trees (because of single
sessionId resulting from  setsid) when the container is alive. We need to obtain the PID of
the containers when they start and use that PID to send signal for completed containers' case
also.

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