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From "Ramkumar Vadali (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-2186) DistributedRaidFileSystem should implement getFileBlockLocations()
Date Mon, 23 May 2011 17:40:47 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ramkumar Vadali resolved MAPREDUCE-2186.
----------------------------------------

    Resolution: Won't Fix

Better to fix MAPREDUCE-2185

> DistributedRaidFileSystem should implement getFileBlockLocations()
> ------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2186
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2186
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: contrib/raid
>            Reporter: Ramkumar Vadali
>            Assignee: Ramkumar Vadali
>
> If a RAIDed file has missing blocks, DistributedRaidFileSystem.getFileBlockLocations()
would return no block locations. This could lead a client to believe that the file is not
readable. But if parity data is available, the file actually is readable.
> It would be better to implement getFileBlockLocations() and return the location of the
parity blocks that would be needed to reconstruct the missing block.

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