Eric Payne commented on YARN-2009:

If we are to choose the less complicated route, I believe that, at the very 
least, when {{ProportionalCapacityPreemptionPolicy}} determines that {{queueA}} 
needs to give up some containers, it should first select containers from the 
lowest priority apps.

> Priority support for preemption in ProportionalCapacityPreemptionPolicy
> -----------------------------------------------------------------------
>                 Key: YARN-2009
>                 URL: https://issues.apache.org/jira/browse/YARN-2009
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacityscheduler
>            Reporter: Devaraj K
>            Assignee: Sunil G
> While preempting containers based on the queue ideal assignment, we may need 
> to consider preempting the low priority application containers first.

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