[jira] [Created] (TAJO-518) tajo-algebra and ProjectionPushDownRule code cleanup

[Hyunsik Choi (JIRA)]

Hyunsik Choi created TAJO-518:
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             Summary: tajo-algebra and ProjectionPushDownRule code cleanup
                 Key: TAJO-518
                 URL: https://issues.apache.org/jira/browse/TAJO-518
             Project: Tajo
          Issue Type: Bug
          Components: planner/optimizer
            Reporter: Hyunsik Choi
            Assignee: Hyunsik Choi
            Priority: Trivial
             Fix For: 0.8-incubating


This patch fixes some potential bugs commented in TAJO-501 reviews.
https://reviews.apache.org/r/17040/



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