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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-494) RM should be able to hard stop a lingering app on a NM
Date Thu, 21 Mar 2013 17:51:15 GMT
Daryn Sharp created YARN-494:
--------------------------------

             Summary: RM should be able to hard stop a lingering app on a NM
                 Key: YARN-494
                 URL: https://issues.apache.org/jira/browse/YARN-494
             Project: Hadoop YARN
          Issue Type: Bug
          Components: nodemanager, resourcemanager
    Affects Versions: 2.0.0-alpha, 3.0.0, 0.23.3
            Reporter: Daryn Sharp


It's possible for a NM to "leak" applications that the RM believes have finished.  This currently
tends to happen when a lingering app jams in log aggregation or misses the notification to
begin aggregation.

Until aggregation completes, the NMs send app keepalive requests to the RM so it continues
renewing the app's tokens.  This could be extend to allow the RM to send a hard stop to a
NM for an app that has been running for a configurable interval of time after the app has
finished.

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