boneanxs commented on issue #8833:
URL: 
https://github.com/apache/incubator-gluten/issues/8833#issuecomment-3222219134

   @marin-ma @FelixYBW I noticed that even after updating some jobs to use 
sort-based shuffle, the shuffle data is still much larger compared to vanilla 
Spark. what could be the cause?
   
   Gluten:
   <img width="390" height="828" alt="Image" 
src="https://github.com/user-attachments/assets/1d030814-74ab-46e8-8f62-53a4af2f461c";
 />
   
   <img width="221" height="465" alt="Image" 
src="https://github.com/user-attachments/assets/3156db00-57ad-4495-8c7d-49824a7bd456";
 />
   
   Vanilla:
   <img width="382" height="441" alt="Image" 
src="https://github.com/user-attachments/assets/64ae4835-e8ba-4c54-87c2-74d9043eb648";
 />


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