[jira] [Commented] (DRILL-8245) Project pushdown depends on rules order and might not happen

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-8245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17553288#comment-17553288 ] 

ASF GitHub Bot commented on DRILL-8245:
---------------------------------------

vvysotskyi opened a new pull request, #2572:
URL: https://github.com/apache/drill/pull/2572

   # [DRILL-8245](https://issues.apache.org/jira/browse/DRILL-8245): Project pushdown depends on rules order and might not happen
   
   ## Description
   Fixed `DrillScanRel` cost to prefer scan with the pushed project columns and removed a hack of adding a dynamic star to columns for the case of creating `DrillScanRel` using scan rule, so dependency on rules order is removed.
   This change exposed another bug in httpd plugin, for some cases, it was dependent on the presence of a dynamic star, though a specific column was selected, fixed this issue here also.
   
   ## Documentation
   NA
   
   ## Testing
   All unit tests pass.
   




> Project pushdown depends on rules order and might not happen
> ------------------------------------------------------------
>
>                 Key: DRILL-8245
>                 URL: https://issues.apache.org/jira/browse/DRILL-8245
>             Project: Apache Drill
>          Issue Type: Bug
>            Reporter: Vova Vysotskyi
>            Assignee: Vova Vysotskyi
>            Priority: Major
>
> When the ProjectRomoveRule deletes the project before applying the rule that pushes the project to scan, Drill converts scan to DrillScanRel and adds explicitly star column so all columns will be read.



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