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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1133) Tools to analyze and debug namenode on a production cluster
Date Tue, 03 Apr 2007 22:47:32 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12486523

Hadoop QA commented on HADOOP-1133:

+1, because http://issues.apache.org/jira/secure/attachment/12354889/metasave3.patch applied
and successfully tested against trunk revision http://svn.apache.org/repos/asf/lucene/hadoop/trunk/525290.
Results are at http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch

> Tools to analyze and debug namenode on a production cluster
> -----------------------------------------------------------
>                 Key: HADOOP-1133
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1133
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: dhruba borthakur
>         Assigned To: dhruba borthakur
>         Attachments: metasave3.patch
> I would like to have a tool that dumps namenode data structures to a log file. This is
especially useful in debugging a production cluster where attaching a debugger to the namenode
is not a feasible option.

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