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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2248) DistributedRaidFileSystem should unraid only the corrupt block
Date Thu, 07 Apr 2011 15:42:22 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13016967#comment-13016967
] 

Hudson commented on MAPREDUCE-2248:
-----------------------------------

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

> DistributedRaidFileSystem should unraid only the corrupt block
> --------------------------------------------------------------
>
>                 Key: MAPREDUCE-2248
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2248
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>    Affects Versions: 0.23.0
>            Reporter: Ramkumar Vadali
>            Assignee: Ramkumar Vadali
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2248.1.patch, MAPREDUCE-2248.patch
>
>
> DistributedRaidFileSystem unraids the entire file if it hits a corrupt block. It is better
to unraid just the corrupt block and use the rest of the file as normal. This becomes really
important when we have tera-byte sized files.

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