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Posted to yarn-issues@hadoop.apache.org by "kyungwan nam (JIRA)" <ji...@apache.org> on 2017/10/27 08:00:03 UTC

[jira] [Created] (YARN-7408) total capacity could be occupied by a large container request

kyungwan nam created YARN-7408:
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             Summary: total capacity could be occupied by a large container request
                 Key: YARN-7408
                 URL: https://issues.apache.org/jira/browse/YARN-7408
             Project: Hadoop YARN
          Issue Type: Bug
            Reporter: kyungwan nam


if NM can not afford to allocate a large container request, it will be reserved container.
but, in a cluster with long running apps, it is not often that running containers are released.
in cases like this, reserved containers will be increased as time goes on. as a result, total capacity could be occupied by reserved resources.
it makes other container requests starve.



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