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From "Hitesh Sharma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5292) NM Container lifecycle and state transitions to support for PAUSED container state.
Date Thu, 08 Dec 2016 08:25:58 GMT

    [ https://issues.apache.org/jira/browse/YARN-5292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15731526#comment-15731526
] 

Hitesh Sharma commented on YARN-5292:
-------------------------------------

Hi [~kasha], the design doc and the patch allow an opportunistic container to be paused and
resumed. The actual implementation of the pluggable interface will be as part of [YARN-5196]
and there via yarn-site.xml you can specify the preemption policy for an opportunistic container
when there is a guaranteed container waiting to run (i.e. pause or kill). Currently only the
NM scheduler can raise the PAUSE/RESUME events and there is no support for doing so in the
container management protocol.

One of the questions on the table is if there is a need to extend support of PAUSE/RESUME
to guaranteed containers and have the AMs initiate that. Would love to hear some thoughts
on that and if there are any use cases that can benefit from that.

> NM Container lifecycle and state transitions to support for PAUSED container state.
> -----------------------------------------------------------------------------------
>
>                 Key: YARN-5292
>                 URL: https://issues.apache.org/jira/browse/YARN-5292
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Hitesh Sharma
>            Assignee: Hitesh Sharma
>         Attachments: YARN-5292.001.patch, YARN-5292.002.patch, YARN-5292.003.patch, YARN-5292.004.patch,
YARN-5292.005.patch, yarn-5292.pdf
>
>
> This JIRA addresses the NM Container and state machine and lifecycle changes needed 
to support pausing.



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