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Posted to mapreduce-dev@hadoop.apache.org by "Rodrigo Schmidt (JIRA)" <ji...@apache.org> on 2010/02/19 04:02:27 UTC

[jira] Created: (MAPREDUCE-1510) RAID should regenerate parity files if they get deleted

RAID should regenerate parity files if they get deleted
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                 Key: MAPREDUCE-1510
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1510
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: contrib/raid
            Reporter: Rodrigo Schmidt
            Assignee: Rodrigo Schmidt


Currently, if a source file has a replication factor lower or equal to that expected by RAID, the file is skipped and no parity file is generated. I don't think this is a good behavior since parity files can get wrongly deleted, leaving the source file with a low replication factor. In that case, raid should be able to recreate the parity file.


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