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Posted to dev@hive.apache.org by "Deepak Jaiswal (JIRA)" <ji...@apache.org> on 2017/04/13 21:13:41 UTC

[jira] [Created] (HIVE-16441) De-duplicate semijoin branches in n-way joins

Deepak Jaiswal created HIVE-16441:
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             Summary: De-duplicate semijoin branches in n-way joins
                 Key: HIVE-16441
                 URL: https://issues.apache.org/jira/browse/HIVE-16441
             Project: Hive
          Issue Type: Task
            Reporter: Deepak Jaiswal
            Assignee: Deepak Jaiswal


Currently in n-way joins, semi join optimization creates n branches on same key. Instead it should reuse one branch for all the joins.



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