[jira] Updated: (HADOOP-5467) Create an offline fsimage image viewer

["Robert Chansler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-5467?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Chansler updated HADOOP-5467:
------------------------------------

    Release Note: New Offline Image Viewer (oiv) tool reads an fsimage file and writes the data in a variety of user-friendly formats, including XML.  (was: Introduce the Offline Image Viewer (oiv) for dumping the contents of fsimage files to human-readable formats.)

Editorial pass over all release notes prior to publication of 0.21.

> Create an offline fsimage image viewer
> --------------------------------------
>
>                 Key: HADOOP-5467
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5467
>             Project: Hadoop Common
>          Issue Type: New Feature
>            Reporter: Jakob Homan
>            Assignee: Jakob Homan
>             Fix For: 0.21.0
>
>         Attachments: fsimage.xml, fsimageV18, fsimageV19, HADOOP-5467.patch, HADOOP-5467.patch, HADOOP-5467.patch, 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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