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Posted to github@arrow.apache.org by "mingmwang (via GitHub)" <gi...@apache.org> on 2023/02/07 03:43:26 UTC

[GitHub] [arrow-datafusion] mingmwang commented on pull request #5171: Make EnforceSorting global sort aware, fix sort mis-optimizations involving unions, support parallel sort + merge transformations

mingmwang commented on PR #5171:
URL: https://github.com/apache/arrow-datafusion/pull/5171#issuecomment-1420155549

   @alamb @ozankabak @mustafasrepo 
   
   Regarding the global sort replaced to a parallel version(SortPreservingMergeExec + Local Sort) optimization, I think there is already a rule `GlobalSortSelection` for the exact purpose. I think we should not let  the Sort Enforcement rule to handle this again.
   
   


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