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Posted to dev@hive.apache.org by "Deepak Jaiswal (JIRA)" <ji...@apache.org> on 2017/04/12 03:12:41 UTC

[jira] [Created] (HIVE-16423) De-duplicate semijoin branches and add hint to enforce semi join optimization

Deepak Jaiswal created HIVE-16423:
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             Summary: De-duplicate semijoin branches and add hint to enforce semi join optimization
                 Key: HIVE-16423
                 URL: https://issues.apache.org/jira/browse/HIVE-16423
             Project: Hive
          Issue Type: Task
            Reporter: Deepak Jaiswal
            Assignee: Deepak Jaiswal


Currently in an n-way join, a semi join branch is created n times. Instead, it should reuse the  same branch.
Add hints in semijoin to enforce particular semi join optimization.



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