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Date: Mon, 3 Nov 2014 18:58:34 +0000 (UTC)
From: "Billie Rinaldi (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.12707752.1397150653000.400172.1415041114789@Atlassian.JIRA>
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Subject: [jira] [Updated] (YARN-1922) Process group remains alive after
 container process is killed externally
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     [ https://issues.apache.org/jira/browse/YARN-1922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Billie Rinaldi updated YARN-1922:
---------------------------------
    Attachment: YARN-1922.6.patch

Attaching a new patch.  Instead of using do/while (!completed.get()), this patch simply uses while(true), so that it always loops until the pid file appears or the maxKillWaitTime elapses.  [~vinodkv], does this address your concerns?

> Process group remains alive after container process is killed externally
> ------------------------------------------------------------------------
>
>                 Key: YARN-1922
>                 URL: https://issues.apache.org/jira/browse/YARN-1922
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.4.0
>         Environment: CentOS 6.4
>            Reporter: Billie Rinaldi
>            Assignee: Billie Rinaldi
>         Attachments: YARN-1922.1.patch, YARN-1922.2.patch, YARN-1922.3.patch, YARN-1922.4.patch, YARN-1922.5.patch, YARN-1922.6.patch
>
>
> If the main container process is killed externally, ContainerLaunch does not kill the rest of the process group.  Before sending the event that results in the ContainerLaunch.containerCleanup method being called, ContainerLaunch sets the "completed" flag to true.  Then when cleaning up, it doesn't try to read the pid file if the completed flag is true.  If it read the pid file, it would proceed to send the container a kill signal.  In the case of the DefaultContainerExecutor, this would kill the process group.


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