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https://issues.apache.org/jira/browse/YARN-5972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun Suresh updated YARN-5972:
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Reporter: Hitesh Sharma (was: Arun Suresh)
> Add Support for Pausing/Freezing of containers
> ----------------------------------------------
>
> Key: YARN-5972
> URL: https://issues.apache.org/jira/browse/YARN-5972
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Hitesh Sharma
> Assignee: Hitesh Sharma
>
> 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.
> Instead of preempting a running container, the container can be moved to a
> PAUSED state, where it remains until resources get freed up on the node then
> the preempted container can resume to the running state.
> Note that process freezing this is already supported by 'cgroups freezer'
> which is used internally by the docker pause functionality. Windows also has
> OS level support of a similar nature.
> 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 call would
> pause the VM and resume would restore it back to the running state.
> If the container executor / runtime doesn't support preemption, then preempt
> would default to killing the container.
>
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