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Posted to mapreduce-issues@hadoop.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2011/04/07 17:42:21 UTC
[jira] [Commented] (MAPREDUCE-2155) RaidNode should optionally
dispatch map reduce jobs to fix corrupt blocks (instead of fixing locally)
[ https://issues.apache.org/jira/browse/MAPREDUCE-2155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13016963#comment-13016963 ]
Hudson commented on MAPREDUCE-2155:
-----------------------------------
Integrated in Hadoop-Mapreduce-trunk #643 (See [https://hudson.apache.org/hudson/job/Hadoop-Mapreduce-trunk/643/])
> 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
> Components: contrib/raid
> Affects Versions: 0.23.0
> Reporter: Patrick Kling
> Assignee: Patrick Kling
> Fix For: 0.23.0
>
> Attachments: MAPREDUCE-2155.2.patch, 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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