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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