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Posted to dev@hive.apache.org by "Vineet Garg (JIRA)" <ji...@apache.org> on 2019/03/05 19:07:00 UTC

[jira] [Created] (HIVE-21395) Refactor HiveSemiJoinRule

Vineet Garg created HIVE-21395:
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             Summary: Refactor HiveSemiJoinRule
                 Key: HIVE-21395
                 URL: https://issues.apache.org/jira/browse/HIVE-21395
             Project: Hive
          Issue Type: Improvement
          Components: Query Planning
    Affects Versions: 4.0.0
            Reporter: Vineet Garg
            Assignee: Vineet Garg


Following refactoring needs to be done:
* Update the rule matching pattern to avoid using HepVertex
* HIVE-21338 adds logic to determine if rel plan will produce at most one row. Use this in HiveSemiJoinRule



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