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Posted to github@arrow.apache.org by "korowa (via GitHub)" <gi...@apache.org> on 2023/11/06 19:39:10 UTC

Re: [I] TPCH, Query 18 and 17 very slow [arrow-datafusion]

korowa commented on issue #5646:
URL: https://github.com/apache/arrow-datafusion/issues/5646#issuecomment-1796178380

   The issue seems to be (at least partially) related to `FilterExec` returning [unknown](https://github.com/apache/arrow-datafusion/blob/308c35404939ed39e4e398054d6fc78c89817109/datafusion/physical-plan/src/filter.rs#L199) statistics in case of unsupported filter predicates -- I wonder, if it would be better / more correct to rely on worth-case scenario for such filters, and simply propagate input statistics -- it seems to be enough to fix Q17 plan.


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