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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1690) Name Node should not process format command while it is running.
Date Wed, 02 Mar 2011 05:52:37 GMT
Name Node should not process format command while it is running.
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                 Key: HDFS-1690
                 URL: https://issues.apache.org/jira/browse/HDFS-1690
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 0.21.0, 0.20.2, 0.20.1
            Reporter: Uma Maheswara Rao G


Currently NameNode allows format command while it running. In this case the command is executed
partially (Lock file is deleted) and an exception thrown. Because of this Name Node should
be formatted after restart. This sort of cases can happen accidentally. To prevent such cases
Name Node should not execute the format command partially while it is running. It can stright
away throw exception/log saying, Name Node is running.


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