Sandy Ryza created YARN-2111:

             Summary: In FairScheduler.attemptScheduling, we won't count 
containers as assigned if they have 0 memory but non-zero cores
                 Key: YARN-2111
             Project: Hadoop YARN
          Issue Type: Bug
          Components: scheduler
    Affects Versions: 2.4.0
            Reporter: Sandy Ryza

        if (Resources.greaterThan(RESOURCE_CALCULATOR, clusterResource,
              Resources.none())) {

As RESOURCE_CALCULATOR is a DefaultResourceCalculator, we won't take cores here 
into account.

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