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From "Patrick Kling" <pkl...@cs.uwaterloo.ca>
Subject Review Request: Distributed block fixer for raid
Date Thu, 25 Nov 2010 00:20:50 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/120/
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Review request for hadoop-mapreduce.


Summary
-------

This change adds a new implementation of the raid block fixer that uses map reduce jobs to
fix missing/corrupt blocks, which allows us to fix a large number of blocks quickly. The user
can specify via a configuration variable whether the old (local) or the new implementation
should be used.


This addresses bug MAPREDUCE-2155.
    https://issues.apache.org/jira/browse/MAPREDUCE-2155


Diffs
-----

  http://svn.apache.org/repos/asf/hadoop/mapreduce/trunk/src/contrib/raid/src/java/org/apache/hadoop/hdfs/RaidDFSUtil.java
1038358 
  http://svn.apache.org/repos/asf/hadoop/mapreduce/trunk/src/contrib/raid/src/java/org/apache/hadoop/raid/BlockFixer.java
1038358 
  http://svn.apache.org/repos/asf/hadoop/mapreduce/trunk/src/contrib/raid/src/java/org/apache/hadoop/raid/DistBlockFixer.java
PRE-CREATION 
  http://svn.apache.org/repos/asf/hadoop/mapreduce/trunk/src/contrib/raid/src/java/org/apache/hadoop/raid/LocalBlockFixer.java
PRE-CREATION 
  http://svn.apache.org/repos/asf/hadoop/mapreduce/trunk/src/contrib/raid/src/java/org/apache/hadoop/raid/RaidNode.java
1038358 
  http://svn.apache.org/repos/asf/hadoop/mapreduce/trunk/src/contrib/raid/src/java/org/apache/hadoop/raid/RaidShell.java
1038358 
  http://svn.apache.org/repos/asf/hadoop/mapreduce/trunk/src/contrib/raid/src/test/org/apache/hadoop/raid/TestBlockFixer.java
1038358 
  http://svn.apache.org/repos/asf/hadoop/mapreduce/trunk/src/contrib/raid/src/test/org/apache/hadoop/raid/TestRaidShell.java
1038358 
  http://svn.apache.org/repos/asf/hadoop/mapreduce/trunk/src/contrib/raid/src/test/org/apache/hadoop/raid/TestReedSolomonDecoder.java
1038358 

Diff: https://reviews.apache.org/r/120/diff


Testing
-------

TestBlockFixer, other raid unit tests, manual testing on test cluster


Thanks,

Patrick


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