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Posted to dev@hive.apache.org by "Vineet Garg (Jira)" <ji...@apache.org> on 2019/12/12 12:41:00 UTC

[jira] [Created] (HIVE-22637) Avoid cost based rules during generating expressions from AST

Vineet Garg created HIVE-22637:
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             Summary: Avoid cost based rules during generating expressions from AST
                 Key: HIVE-22637
                 URL: https://issues.apache.org/jira/browse/HIVE-22637
             Project: Hive
          Issue Type: Improvement
          Components: Query Planning
            Reporter: Vineet Garg
            Assignee: Vineet Garg


genExprNode uses default dispatcher which fire rules based on cost, computation of cost is expensive and looks un-necessary.



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