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Posted to hdfs-dev@hadoop.apache.org by "Kihwal Lee (JIRA)" <ji...@apache.org> on 2014/12/16 19:41:13 UTC

[jira] [Created] (HDFS-7533) Datanode sometimes does not shutdown on receiving upgrade shutdown command

Kihwal Lee created HDFS-7533:
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             Summary: Datanode sometimes does not shutdown on receiving upgrade shutdown command
                 Key: HDFS-7533
                 URL: https://issues.apache.org/jira/browse/HDFS-7533
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Kihwal Lee


When datanode is told to shutdown via the dfsadmin command during rolling upgrade, it may not shutdown.  This is because not all writers have responder running, but sendOOB() tries anyway. This causes NPE and the shutdown thread dies, halting the shutdown after only shutting down DataXceiverServer. 



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