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https://issues.apache.org/jira/browse/MAPREDUCE-2099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12926045#action_12926045
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Hudson commented on MAPREDUCE-2099:
-----------------------------------
Integrated in Hadoop-Mapreduce-trunk-Commit #523 (See
[https://hudson.apache.org/hudson/job/Hadoop-Mapreduce-trunk-Commit/523/])
MAPREDUCE-2099. RaidNode recreates outdated parity HARs. (Ramkumar Vadali
via
schen)
> RaidNode should recreate outdated parity HARs
> ---------------------------------------------
>
> Key: MAPREDUCE-2099
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2099
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: contrib/raid
> Reporter: Ramkumar Vadali
> Assignee: Ramkumar Vadali
> Fix For: 0.22.0
>
> Attachments: MAPREDUCE-2099.2.patch, MAPREDUCE-2099.3.patch,
> MAPREDUCE-2099.4.patch, MAPREDUCE-2099.patch
>
>
> After parity files are archived into a parity HAR, a change in the source
> file does not cause the HAR to be recreated. Instead, individual parity files
> are created for the modified files but the HAR is not touched. This causes
> increased disk usage for parity data.
> The parity HAR could be recreated if a certain percentage of files in the HAR
> are determined to be outdated.
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