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Posted to issues@drill.apache.org by "Hanumath Rao Maduri (JIRA)" <ji...@apache.org> on 2018/05/31 03:00:00 UTC

[jira] [Created] (DRILL-6456) Planner shouldn't create any exchanges on the right side of Lateral Join.

Hanumath Rao Maduri created DRILL-6456:
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             Summary: Planner shouldn't create any exchanges on the right side of Lateral Join.
                 Key: DRILL-6456
                 URL: https://issues.apache.org/jira/browse/DRILL-6456
             Project: Apache Drill
          Issue Type: Bug
          Components: Query Planning &amp; Optimization
    Affects Versions: 1.14.0
            Reporter: Hanumath Rao Maduri
            Assignee: Hanumath Rao Maduri
             Fix For: 1.14.0


Currently, there is no restriction placed on right side of the LateralJoin. This is causing planner to generate an Exchange when there are operators like (Agg, Limit, Sort etc). 

Due to this unnest operator cannot retrieve the row from lateral's left side to process the pipeline further. Enhance the planner to not generate exchanges on the right side of the LateralJoin.



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