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Date: Wed, 7 Aug 2013 17:32:50 +0000 (UTC)
From: "Steve Loughran (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.12662436.1375896716831.17363.1375896770212@arcas>
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References: <JIRA.12662436.1375896716831@arcas>
Subject: [jira] [Commented] (YARN-1040) Add ability to execute multiple
 programs in the same long-lived container
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    [ https://issues.apache.org/jira/browse/YARN-1040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13732193#comment-13732193 ] 

Steve Loughran commented on YARN-1040:
--------------------------------------

ps, credit to [~bikassaha] for this idea
                
> Add ability to execute multiple programs in the same long-lived container
> -------------------------------------------------------------------------
>
>                 Key: YARN-1040
>                 URL: https://issues.apache.org/jira/browse/YARN-1040
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>    Affects Versions: 3.0.0
>            Reporter: Steve Loughran
>
> The AM should be able to exec >1 process in a container, rather than have the NM automatically release the container when the single process exits.
> This would let an AM restart a process on the same container repeatedly, which for HBase would offer locality on a restarted region server.
> We may also want the ability to exec multiple processes in parallel, so that something could be run in the container while a long-lived process was already running. This can be useful in monitoring and reconfiguring the long-lived process, as well as shutting it down.

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