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https://issues.apache.org/jira/browse/YARN-5292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15724410#comment-15724410
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Subru Krishnan commented on YARN-5292:
--------------------------------------
Thanks [~hrsharma]/[~asuresh] for working on this. I am on vacation so don't
have the opportunity to follow this closely but I did raise a few concerns
([above|https://issues.apache.org/jira/browse/YARN-5292?focusedCommentId=15685939]).
[~hrsharma] replied to one of them based on which I have updated the JIRA
title but the rest do *not* seem to be addressed. Am I missing something?
> Support for PAUSED container state for OPPORTUNISTIC containers
> ---------------------------------------------------------------
>
> Key: YARN-5292
> URL: https://issues.apache.org/jira/browse/YARN-5292
> Project: Hadoop YARN
> Issue Type: New Feature
> 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
>
>
> YARN-2877 introduced OPPORTUNISTIC containers, and YARN-5216 proposes to add
> capability to customize how OPPORTUNISTIC containers get preempted.
> In this JIRA we propose introducing a PAUSED container state.
> When a running container gets preempted, it enters the PAUSED state, where it
> remains until resources get freed up on the node then the preempted container
> can resume to the running state.
>
> One scenario where this capability is useful is work preservation. How
> preemption is done, and whether the container supports it, is implementation
> specific.
> For instance, if the container is a virtual machine, then preempt would pause
> the VM and resume would restore it back to the running state.
> If the container doesn't support preemption, then preempt would default to
> killing the container.
>
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