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From "Jakob Homan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-5467) Create an offline fsimage image viewer
Date Tue, 24 Mar 2009 23:57:50 GMT

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

Jakob Homan updated HADOOP-5467:
--------------------------------

    Attachment: HADOOP-5467.patch

Not sure why the patch failed to apply.  Worked for me.  I've rebased it against the trunk
and tested that it works:
{noformat}
[698]mymac:trunk jhoman$ patch -p0 < ~/work/git/hadoop/HADOOP-5467.patch 
patching file bin/hadoop
patching file src/docs/src/documentation/content/xdocs/offlineimageviewer.xml
patching file src/docs/src/documentation/content/xdocs/site.xml
patching file src/test/org/apache/hadoop/tools/offlineImageViewer/TestOfflineImageViewer.java
patching file src/tools/org/apache/hadoop/tools/offlineImageViewer/ConsoleFSImageVisitor.java
patching file src/tools/org/apache/hadoop/tools/offlineImageViewer/FSImageElement.java
patching file src/tools/org/apache/hadoop/tools/offlineImageViewer/FSImageProcessor.java
patching file src/tools/org/apache/hadoop/tools/offlineImageViewer/FSImageProcessorV16to19.java
patching file src/tools/org/apache/hadoop/tools/offlineImageViewer/FSImageVisitor.java
patching file src/tools/org/apache/hadoop/tools/offlineImageViewer/LsImageVisitor.java
patching file src/tools/org/apache/hadoop/tools/offlineImageViewer/OfflineImageViewer.java
patching file src/tools/org/apache/hadoop/tools/offlineImageViewer/TextWriterFSImageProcessor.java
patching file src/tools/org/apache/hadoop/tools/offlineImageViewer/XMLFSImageVisitor.java
{noformat}

> 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: util
>            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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