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Posted to issues@drill.apache.org by "Jason Altekruse (JIRA)" <ji...@apache.org> on 2015/10/06 19:25:27 UTC

[jira] [Created] (DRILL-3899) SplitUpComplexExpressions rule should be enhanced to avoid planning unnecessary copies of data

Jason Altekruse created DRILL-3899:
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             Summary: SplitUpComplexExpressions rule should be enhanced to avoid planning unnecessary copies of data
                 Key: DRILL-3899
                 URL: https://issues.apache.org/jira/browse/DRILL-3899
             Project: Apache Drill
          Issue Type: Bug
            Reporter: Jason Altekruse


A small enhancement was made as part of DRILL-3876 to remove an unnecessary copy in a simple flatten case. This was easy to implement, but did not cover all of the possible cases where the rewrite rule is currently planning inefficient operations. This issue is tracking the more complete fix to handle all of the more complex cases optimally.



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