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https://issues.apache.org/jira/browse/MAPREDUCE-2155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12935587#action_12935587
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Patrick Kling commented on MAPREDUCE-2155:
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Review board entry for this patch: https://reviews.apache.org/r/120/
ant test-patch output:
{code}
[exec] +1 overall.
[exec]
[exec] +1 @author. The patch does not contain any @author tags.
[exec]
[exec] +1 tests included. The patch appears to include 14 new or
modified tests.
[exec]
[exec] +1 javadoc. The javadoc tool did not generate any warning
messages.
[exec]
[exec] +1 javac. The applied patch does not increase the total number
of javac compiler warnings.
[exec]
[exec] +1 findbugs. The patch does not introduce any new Findbugs
(version 1.3.9) warnings.
[exec]
[exec] +1 release audit. The applied patch does not increase the
total number of release audit warnings.
[exec]
[exec] +1 system test framework. The patch passed system test
framework compile.
{code}
> RaidNode should optionally dispatch map reduce jobs to fix corrupt blocks
> (instead of fixing locally)
> -----------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-2155
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2155
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 0.23.0
> Reporter: Patrick Kling
> Fix For: 0.23.0
>
> Attachments: MAPREDUCE-2155.patch
>
>
> 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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