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Posted to dev@hive.apache.org by "Pengcheng Xiong (JIRA)" <ji...@apache.org> on 2015/04/17 06:44:58 UTC

[jira] [Created] (HIVE-10375) CBO (Calcite Return Path): disable the identity project remover for some union operators

Pengcheng Xiong created HIVE-10375:
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             Summary: CBO (Calcite Return Path): disable the identity project remover for some union operators
                 Key: HIVE-10375
                 URL: https://issues.apache.org/jira/browse/HIVE-10375
             Project: Hive
          Issue Type: Sub-task
            Reporter: Pengcheng Xiong


The identity project remover will remove the "Project" operator that is required by some Union Operators. A temporary solution is to disable it for them.



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