rluvaton commented on PR #15608:
URL: https://github.com/apache/datafusion/pull/15608#issuecomment-2789127156

   I saw the pr from @ashdnazg and it is a better solution in my opinion as it 
does not depend need to know the number of available tokio tasks, and just make 
the read spill work
   - https://github.com/apache/datafusion/pull/15654
   
   and although multi level merge sort should be implemented, @2010YOUY01 
implementation (#15610) with adaption for `row_hash` in `AggregateExec` to use 
it might be the better way, so closing this  
   
   `row_hash` code to update:
   
https://github.com/apache/datafusion/blob/784df33f8930f91eada0d67aa5acc25a4c25cea2/datafusion/physical-plan/src/aggregates/row_hash.rs#L1053-L1085


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