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From "Russell Melick (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-2130) Cost based choice for rewrite during Automatic Indexing
Date Sat, 23 Apr 2011 03:57:05 GMT
Cost based choice for rewrite during Automatic Indexing
-------------------------------------------------------

                 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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