lwz9103 commented on issue #8216:
URL: 
https://github.com/apache/incubator-gluten/issues/8216#issuecomment-2538282861

   ### Root Cause
   
   Vanilla RangePartitioner numPartitions is rangeBounds.length + 1,  which may 
not be the same as original paritions. While gluten NativePartitioner 
numPartitions is the given partition size of RangePartitioner.
   
   Vanilla Spark:
   
![image](https://github.com/user-attachments/assets/db3dc419-7cc3-4a44-82e7-524cf1f0eb67)
   
   Gluten:
   
![image](https://github.com/user-attachments/assets/72c413ab-a1c1-4d1a-a220-e8ae42841c46)
   
   


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