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Posted to dev@hive.apache.org by "Russell Melick (JIRA)" <ji...@apache.org> on 2011/04/23 05:57:05 UTC

[jira] [Created] (HIVE-2130) Cost based choice for rewrite during Automatic Indexing

Cost based choice for rewrite during Automatic Indexing
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                 Key: HIVE-2130
                 URL: https://issues.apache.org/jira/browse/HIVE-2130
             Project: Hive
          Issue Type: Improvement
          Components: Indexing
    Affects Versions: 0.8.0
            Reporter: Russell Melick


After processing a predicate, there are potentially multiple index rewrites possible.  Currently, we just choose the first one.  However, there are probably heuristics for choosing certain rewrites over others, based on potential time savings. See IndexWhereProcessor for a good place to do this.

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