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From "Patrick Kling (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1483) DFSClient.getBlockLocations returns BlockLocations with no indication that the corresponding blocks are corrupt
Date Thu, 28 Oct 2010 01:51:20 GMT
DFSClient.getBlockLocations returns BlockLocations with no indication that the corresponding
blocks are corrupt
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                 Key: HDFS-1483
                 URL: https://issues.apache.org/jira/browse/HDFS-1483
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Patrick Kling


When there are no uncorrupted replicas of a block, FSNamesystem.getBlockLocations returns
LocatedBlocks corresponding to corrupt blocks. When DFSClient converts these to BlockLocations,
the information that the corresponding block is corrupt is lost. We should add a field to
BlockLocation to indicate whether the corresponding block is corrupt in order to warn the
client that reading this block will fail. This would be especially useful for tools such as
RAID FSCK, which could then easily inspect whether data or parity blocks are corrupted without
having to make direct RPC calls.

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