alamb commented on issue #20325:
URL: https://github.com/apache/datafusion/issues/20325#issuecomment-3892924171

   Some theories I tested with codex
   **Tuning Thresholds for the adaptive row selection representation**
   - Default pushdown is +24.7% slower than no pushdown for Q10 in this 
environment.
   - Tuning the threshold for (threshold=12 and no predicate cache) improves 
pushdown by 9.0% vs default pushdown.
   - Even tuned pushdown remains 13.4% slower than no pushdown for Q10.
   
   
   


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