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Posted to mapreduce-issues@hadoop.apache.org by "Scott Chen (JIRA)" <ji...@apache.org> on 2011/01/11 00:11:46 UTC

[jira] Commented: (MAPREDUCE-2248) DistributedRaidFileSystem should unraid only the corrupt block

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12979838#action_12979838 ] 

Scott Chen commented on MAPREDUCE-2248:
---------------------------------------

+1 Looks good

> 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
>            Reporter: Ramkumar Vadali
>            Assignee: Ramkumar Vadali
>         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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