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Posted to yarn-issues@hadoop.apache.org by "Weiwei Yang (JIRA)" <ji...@apache.org> on 2018/07/10 08:06:00 UTC

[jira] [Created] (YARN-8511) When AM releases a container, RM removes allocation tags before it is released by NM

Weiwei Yang created YARN-8511:
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             Summary: When AM releases a container, RM removes allocation tags before it is released by NM
                 Key: YARN-8511
                 URL: https://issues.apache.org/jira/browse/YARN-8511
             Project: Hadoop YARN
          Issue Type: Bug
          Components: capacity scheduler
    Affects Versions: 3.1.0
            Reporter: Weiwei Yang
            Assignee: Weiwei Yang


User leverages PC with allocation tags to avoid port conflicts between apps, we found sometimes they still get port conflicts. This is a similar issue like YARN-4148. Because RM immediately removes allocation tags once AM#allocate asks to release a container, however container on NM has some delay until it actually gets killed and released the port. We should let RM remove allocation tags AFTER NM confirms the containers are released. 



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