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From "Patrick Kling (JIRA)" <j...@apache.org>
Subject [jira] Created: (MAPREDUCE-2155) RaidNode should optionally dispatch map reduce jobs to fix corrupt blocks (instead of fixing locally)
Date Tue, 26 Oct 2010 17:08:21 GMT
RaidNode should optionally dispatch map reduce jobs to fix corrupt blocks (instead of fixing
locally)
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                 Key: MAPREDUCE-2155
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2155
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
            Reporter: Patrick Kling


Recomputing blocks based on parity information is expensive. Rather than doing this locally
at the RaidNode, we should run map reduce jobs. This will allow us to quickly fix a large
number of corrupt or missing blocks.

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