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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2020/12/27 13:15:57 UTC

[GitHub] [arrow] Dandandan edited a comment on pull request #9007: ARROW-11029: [Rust] [DataFusion] Improve join order optimization [WIP]

Dandandan edited a comment on pull request #9007:
URL: https://github.com/apache/arrow/pull/9007#issuecomment-751466654


   I think that definitely makes sense @alamb to test it like that, I think the second case (bogus stats) makes sense to start with, but to have a better look based on the TPCH queries makes sense too at some moment (I think we would need to support more queries first though that benefit from reordering).
   
   Currently we also only swap order `locally` between two nodes, at some point we would like to do have a more global optimization, making it even more important to have proper tests.


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