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https://issues.apache.org/jira/browse/MAPREDUCE-2132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12923216#action_12923216
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Scott Chen commented on MAPREDUCE-2132:
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+1 The patch looks good.
> Need a command line option in RaidShell to fix blocks using raid
> ----------------------------------------------------------------
>
> Key: MAPREDUCE-2132
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2132
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: contrib/raid
> Reporter: Ramkumar Vadali
> Assignee: Ramkumar Vadali
> Fix For: 0.22.0
>
> Attachments: MAPREDUCE-2132.2.patch, MAPREDUCE-2132.patch
>
>
> RaidShell currently has an option to recover a file and return the path to
> the recovered file. The administrator can then rename the recovered file to
> the damaged file.
> The problem with this is that the file metadata is altered, specifically the
> modification time. Instead we need a way to just repair the damaged blocks
> and send the fixed blocks to a data node.
> Once this is done, we can put automation around it.
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