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Posted to issues@tez.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2016/11/10 14:27:58 UTC

[jira] [Created] (TEZ-3535) YarnTaskScheduler can hold onto low priority containers until they expire

Jason Lowe created TEZ-3535:
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             Summary: YarnTaskScheduler can hold onto low priority containers until they expire
                 Key: TEZ-3535
                 URL: https://issues.apache.org/jira/browse/TEZ-3535
             Project: Apache Tez
          Issue Type: Bug
    Affects Versions: 0.8.4, 0.7.1
            Reporter: Jason Lowe
            Assignee: Jason Lowe


With container reuse enabled, YarnTaskScheduler will retain but not schedule any container allocations that are lower priority than the highest priority task requests.  This can lead to poor performance as these lower priority containers clog up resources needed for high priority allocations.



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