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Posted to mapreduce-issues@hadoop.apache.org by "Ramkumar Vadali (JIRA)" <ji...@apache.org> on 2011/02/04 20:00:31 UTC

[jira] Created: (MAPREDUCE-2303) RAID BlockFixer should choose targets better

RAID BlockFixer should choose targets better
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                 Key: MAPREDUCE-2303
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2303
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: contrib/raid
            Reporter: Ramkumar Vadali
            Assignee: Ramkumar Vadali


The RAID BlockFixer chooses the destination of the generated block at random. It avoids nodes that have a corrupt replica of the block, but does not do anything beyond that. It needs to avoid data nodes that have a replica of any source or parity block in the block's stripe.

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