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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3644) OEV should recognize and deal with 0.20.20x opcode versions
Date Thu, 12 Jul 2012 06:03:34 GMT
Todd Lipcon created HDFS-3644:

             Summary: OEV should recognize and deal with 0.20.20x opcode versions
                 Key: HDFS-3644
                 URL: https://issues.apache.org/jira/browse/HDFS-3644
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: tools
    Affects Versions: 2.0.0-alpha, 3.0.0
            Reporter: Todd Lipcon
            Priority: Minor

We have some opcode conflicts for edit logs between 0.20.20x (LV -19, -31) vs newer versions.
For edit log loading, we dealt with this by forcing users to save namespace on an earlier
version before upgrading. But, using a trunk OEV on an older version is useful since the OEV
has had so many improvements. It would be nice to be able to specify a flag to the OEV to
be able to run on older edit logs.

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