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Posted to yarn-dev@hadoop.apache.org by "Sandy Ryza (JIRA)" <ji...@apache.org> on 2012/10/18 22:36:02 UTC

[jira] [Created] (YARN-170) NodeManager stop() gets called twice on shutdown

Sandy Ryza created YARN-170:
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             Summary: NodeManager stop() gets called twice on shutdown
                 Key: YARN-170
                 URL: https://issues.apache.org/jira/browse/YARN-170
             Project: Hadoop YARN
          Issue Type: Bug
          Components: nodemanager
    Affects Versions: 2.0.2-alpha
            Reporter: Sandy Ryza
            Assignee: Sandy Ryza


The stop method in the NodeManager gets called twice when the NodeManager is shut down via the shutdown hook.

The first is the stop that gets called directly by the shutdown hook.  The second occurs when the NodeStatusUpdaterImpl is stopped.  The NodeManager responds to the NodeStatusUpdaterImpl stop stateChanged event by stopping itself.  This is so that NodeStatusUpdaterImpl can notify the NodeManager to stop, by stopping itself in response to a request from the ResourceManager

This could be avoided if the NodeStatusUpdaterImpl were to stop the NodeManager by calling its stop method directly.

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