Arun Suresh created YARN-6828:
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             Summary: [Umbrella] Container preemption using OPPORTUNISTIC 
containers
                 Key: YARN-6828
                 URL: https://issues.apache.org/jira/browse/YARN-6828
             Project: Hadoop YARN
          Issue Type: Bug
            Reporter: Arun Suresh
            Assignee: Arun Suresh


Currently, the YARN schedulers selects containers for preemption only in 
response to a starved queue / app's request. We propose to allow the Schedulers 
to mark containers that are allocated over queue capacity/fair-share as 
Opportunistic containers.




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