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From "Jakob Homan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5467) Create an offline fsimage image viewer
Date Thu, 26 Mar 2009 22:42:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12689707#action_12689707
] 

Jakob Homan commented on HADOOP-5467:
-------------------------------------

bq. Ho about just imageProcessor for the package name instead of offlineImageProcessor. Word
"offline" doesn't really add any value.
I'm fine with that, but it's good to emphasize that the tool doesn't need a running cluster
to work. That it's a stand-alone utility, in comparison to the other tools in the package.

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