XiangpengHao commented on PR #6921:
URL: https://github.com/apache/arrow-rs/pull/6921#issuecomment-2614047772

   > Curiously that could some filter get a "sparse" filter evaluation result, 
like `[false, true, false, ...]`, which making range selection in-efficient?
   
   Indeed, sparse filter are slow with current RowSelection implementation, 
it's better to use BooleanArray for such cases. We have follow-up plan to 
dynamically switch between the RowSelector based and BooleanArray based 
filtering.  https://github.com/apache/arrow-rs/issues/5523
   


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