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https://issues.apache.org/jira/browse/HDFS-1171?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ramkumar Vadali resolved HDFS-1171.
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Resolution: Invalid
Recreating this in Map/Reduce: MAPREDUCE-2150
> RaidNode should fix missing blocks directly on Data Node
> --------------------------------------------------------
>
> Key: HDFS-1171
> URL: https://issues.apache.org/jira/browse/HDFS-1171
> Project: Hadoop HDFS
> Issue Type: Task
> Components: contrib/raid
> Affects Versions: 0.20.1
> Reporter: Ramkumar Vadali
> Assignee: Ramkumar Vadali
>
> RaidNode currently does not fix missing blocks. The missing blocks have to be
> fixed manually.
> This task proposes that recovery be more automated:
> 1. RaidNode periodically fetches a list of corrupt files from the NameNode
> 2. If the corrupt files has a RAID parity file, RaidNode identifies missing
> block(s) in the file and recomputes the block(s) using the parity file and
> other good blocks
> 3. RaidNode sends the generated block contents to a DataNode
> a. RaidNode chooses a DataNode with the most available space to send the
> block.
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