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Posted to dev@hive.apache.org by "Vikram Dixit K (JIRA)" <ji...@apache.org> on 2016/04/14 20:35:25 UTC

[jira] [Created] (HIVE-13518) Hive on Tez: Shuffle joins do not choose the right 'big' table.

Vikram Dixit K created HIVE-13518:
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             Summary: Hive on Tez: Shuffle joins do not choose the right 'big' table.
                 Key: HIVE-13518
                 URL: https://issues.apache.org/jira/browse/HIVE-13518
             Project: Hive
          Issue Type: Bug
            Reporter: Vikram Dixit K
            Assignee: Vikram Dixit K


Currently the big table is always assumed to be at position 0 but this isn't efficient for some queries as the big table at position 1 could have a lot more keys/skew. We already have a mechanism of choosing the big table that can be leveraged to make the right choice.



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