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Posted to mapreduce-issues@hadoop.apache.org by "Sandy Ryza (JIRA)" <ji...@apache.org> on 2013/01/28 10:27:13 UTC

[jira] [Created] (MAPREDUCE-4965) In merge, no ordering defined for CompressAwarePath

Sandy Ryza created MAPREDUCE-4965:
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             Summary: In merge, no ordering defined for CompressAwarePath
                 Key: MAPREDUCE-4965
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4965
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
    Affects Versions: 2.0.3-alpha
            Reporter: Sandy Ryza
            Assignee: Sandy Ryza


MAPREDUCE-2264 replaced Paths used in the merge with CompressAwarePaths. In MergeManagerImpl, onDiskMapOutputs is maintained as a TreeSet of CompressAwarePaths, but CompressAwarePath does not implement Comparable, and no Comparator is passed, so there is no defined ordering.

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