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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-2925) Internal fields in LeafQueue access should be protected when accessed from FiCaSchedulerApp to calculate Headroom
Date Fri, 05 Dec 2014 01:21:13 GMT
Wangda Tan created YARN-2925:
--------------------------------

             Summary: Internal fields in LeafQueue access should be protected when accessed
from FiCaSchedulerApp to calculate Headroom
                 Key: YARN-2925
                 URL: https://issues.apache.org/jira/browse/YARN-2925
             Project: Hadoop YARN
          Issue Type: Bug
          Components: capacityscheduler
            Reporter: Wangda Tan
            Assignee: Wangda Tan
            Priority: Critical


Upon YARN-2644, FiCaScheduler will calculation up-to-date headroom before sending back Allocation
response to AM.

Headroom calculation is happened in LeafQueue side, uses fields like used resource, etc. But
it is not protected by any lock of LeafQueue, so it might be corrupted is someone else is
editing it.



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