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From "Todd Lipcon (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-2877) If locking of a storage dir fails, it will remove the other NN's lock file on exit
Date Thu, 02 Feb 2012 00:21:53 GMT
If locking of a storage dir fails, it will remove the other NN's lock file on exit
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                 Key: HDFS-2877
                 URL: https://issues.apache.org/jira/browse/HDFS-2877
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: name-node
    Affects Versions: 1.0.0, 0.23.0, 0.24.0
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon


In {{Storage.tryLock()}}, we call {{lockF.deleteOnExit()}} regardless of whether we successfully
lock the directory. So, if another NN has the directory locked, then we'll fail to lock it
the first time we start another NN. But our failed start attempt will still remove the other
NN's lockfile, and a second attempt will erroneously start.

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