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Posted to issues@tajo.apache.org by "Jihoon Son (JIRA)" <ji...@apache.org> on 2016/02/15 03:51:18 UTC

[jira] [Created] (TAJO-2075) Allowing cross join in the middle of a query plan

Jihoon Son created TAJO-2075:
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             Summary: Allowing cross join in the middle of a query plan
                 Key: TAJO-2075
                 URL: https://issues.apache.org/jira/browse/TAJO-2075
             Project: Tajo
          Issue Type: Improvement
          Components: Planner/Optimizer
            Reporter: Jihoon Son


Currently the cross join is allowed only at the beginning of a query plan. That is, it is allowed only when at least one of its inputs is a simple relation scan. 
This prevents Tajo from executing several popular queries like TPC-DS Q28. 



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