DistributedRaidFileSystem should implement getFileBlockLocations()
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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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