Karthik Kambatla created YARN-2154:

             Summary: FairScheduler: Improve preemption to preempt only those 
containers that would satisfy the incoming request
                 Key: YARN-2154
                 URL: https://issues.apache.org/jira/browse/YARN-2154
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: fairscheduler
    Affects Versions: 2.4.0
            Reporter: Karthik Kambatla
            Assignee: Karthik Kambatla
            Priority: Critical

Today, FairScheduler uses a spray-gun approach to preemption. Instead, it 
should only preempt resources that would satisfy the incoming request. 

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