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Posted to hdfs-dev@hadoop.apache.org by "Todd Lipcon (Created) (JIRA)" <ji...@apache.org> on 2012/02/02 01:21:53 UTC

[jira] [Created] (HDFS-2877) If locking of a storage dir fails, it will remove the other NN's lock file on exit

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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