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From "Ashish Thusoo (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-578) Refator partition pruning code as an optimizer transformation in order to fix bugs that appear in the current code
Date Wed, 24 Jun 2009 15:31:07 GMT
Refator partition pruning code as an optimizer transformation in order to fix bugs that appear
in the current code
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                 Key: HIVE-578
                 URL: https://issues.apache.org/jira/browse/HIVE-578
             Project: Hadoop Hive
          Issue Type: Bug
          Components: Query Processor
    Affects Versions: 0.3.0
            Reporter: Ashish Thusoo
            Assignee: Ashish Thusoo


Some bugs with partition pruning have been reported and the correct fix for many of them is
to rewrite the partition pruning code as an optimizer transformation which gets kicked in
after the predicate pushdown code. This refactor also uses the graph walker framework so that
the partition pruning code gets consolidated well with the frameworks and does not work on
the query block but rather works on the operator tree.

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