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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-580) Name node will exit safe mode w/0 blocks even if data nodes are broken
Date Mon, 31 Aug 2009 17:49:32 GMT
Name node will exit safe mode w/0 blocks even if data nodes are broken
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                 Key: HDFS-580
                 URL: https://issues.apache.org/jira/browse/HDFS-580
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Allen Wittenauer


If one brings up a freshly formatted name node against older data nodes with an incompatible
storage id (such that the datanodes fail with Directory /mnt/u001/dfs-data is in an inconsistent
state: is incompatible with others.), the name node will still come out of safe mode.  Writes
will partially succeed--entries are created, but all are zero length.


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