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From "Colin Patrick McCabe (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2971) some improvements to the manual NN metadata recovery tools
Date Wed, 22 Feb 2012 18:37:49 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Colin Patrick McCabe updated HDFS-2971:
---------------------------------------

    Description: 
Some improvements to the manual NN metadata recovery tools.

Specifically, we want the Offline Edit Viewer (oev) tool to prints out the highest generation
stamp that was encountered when processing the edit log.

We also want OEV to look for large gaps in the generation stamp, as these can indicate corruption.
 The minimum gap to look for should be configurable with -G or --genStampGap.

  was:some improvements to the manual NN metadata recovery tools

    
> some improvements to the manual NN metadata recovery tools
> ----------------------------------------------------------
>
>                 Key: HDFS-2971
>                 URL: https://issues.apache.org/jira/browse/HDFS-2971
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: libhdfs
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: 2012-02-17_0001-OEV-enhancements-pt.-2.patch, HDFS-2971__print_highest_generation_stamp.txt
>
>
> Some improvements to the manual NN metadata recovery tools.
> Specifically, we want the Offline Edit Viewer (oev) tool to prints out the highest generation
stamp that was encountered when processing the edit log.
> We also want OEV to look for large gaps in the generation stamp, as these can indicate
corruption.  The minimum gap to look for should be configurable with -G or --genStampGap.

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