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https://issues.apache.org/jira/browse/MAPREDUCE-2099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13016889#comment-13016889
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Hudson commented on MAPREDUCE-2099:
-----------------------------------

Integrated in Hadoop-Mapreduce-trunk #643 (See 
[https://hudson.apache.org/hudson/job/Hadoop-Mapreduce-trunk/643/])
    

> RaidNode should recreate outdated parity HARs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 are determined to be outdated.

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