Create an offline fsimage image viewer
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                 Key: HADOOP-5467
                 URL: https://issues.apache.org/jira/browse/HADOOP-5467
             Project: Hadoop Core
          Issue Type: New Feature
          Components: util
            Reporter: Jakob Homan
            Assignee: Jakob Homan


It would be useful to have a tool to examine/dump the contents of the fsimage 
file to human-readable form.  This would allow analysis of the namespace (file 
usage, block sizes, etc) without impacting the operation of the namenode.  XML 
would be reasonable output format, as it can be easily viewed, compressed and 
manipulated via either XSLT or XQuery.  

I've started work on this and will have an initial version soon.

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