Sunil G created YARN-3941:

             Summary: Proportional Preemption policy should try to avoid 
sending duplicate PREEMPT_CONTAINER event to scheduler
                 Key: YARN-3941
             Project: Hadoop YARN
          Issue Type: Bug
          Components: capacityscheduler
    Affects Versions: 2.7.1
            Reporter: Sunil G
            Assignee: Sunil G

Currently ProportionalCPP tries to send multiple PREEMPT_CONTAINER events to 
scheduler during every cycle of preemption check till the container is either 
forcefully killed or preempted by AM. 
This can be throttled from ProportionalPreemptionPolicy to avoid excess of 
events to scheduler.

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