Hitesh Sharma edited comment on YARN-5292 at 12/2/16 3:21 AM:

[~asuresh], can you please look at the attached patch? Thanks!

was (Author: hrsharma):
[~asuresh]], can you please look at the attached patch? Thanks!

> Support for PAUSED container state
> ----------------------------------
>                 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.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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