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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/05/23 16:26:25 UTC

[GitHub] [arrow-datafusion] Dandandan commented on issue #384: Remove redundant RepartitionExec from plan

Dandandan commented on issue #384:
URL: https://github.com/apache/arrow-datafusion/issues/384#issuecomment-846589324


   I am wondering whether this helps for DataFusion, as Repartition earlier adds some more parallelism and doing a hash repartion before the filter would be more expensive than after the filter.
   
   For Ballista this might be different if the data needs to be shuffled to multiple machines.


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