alamb commented on issue #6454:
URL: https://github.com/apache/arrow-rs/issues/6454#issuecomment-2374726218

   I think the documentation on 
https://docs.rs/parquet/latest/parquet/arrow/arrow_reader/struct.RowFilter.html 
is also instructive. Even if all the decode is working properly, I think the 
arrow reader may well decode certain pages twice. It is one of my theories 
about why pushing filters down doesn't make things always faster, but I have 
not had time to look into it in more detail
   
   


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