dwsmith1983 commented on PR #6835:
URL: 
https://github.com/apache/datafusion-comet/pull/6835#issuecomment-6127689659

   > Would you be OK with this one landing first?
   
   #6810 has changed shape since then, and the new version is going up shortly. 
The native sort needed about four times the pool under `fair_unified` (I'll put 
the numbers on #6810), so #6810 now falls back to Spark for a NOT IN whose 
streamed side reports an ordering. It adds no proto field and touches nothing 
in the planner, so field 11 stays with this PR, and the only overlap is the 
guard in `CometHashJoin.doConvert`.
   
   I'd still keep #6810 first, because of the P1 above. That NOT IN reads a 
sorted cache, and #6810 sends exactly that case to Spark. The second cache then 
holds Spark's ordered rows, and the order declared here is true. If this PR 
lands first, it needs its own check at that cache boundary. #6810 is a small 
change now, so it shouldn't hold this one up for long.
   


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