jinchengchenghh commented on PR #9026:
URL: 
https://github.com/apache/incubator-gluten/pull/9026#issuecomment-2736935565

   I just discussed the apply partial project condition with @zhztheplayer when 
I implemented partial project, the conclusion was that we would not check the 
operator if it's parent operator does not support columnar,  so as the plan
   ```
   SparkFallbackOperator requires row
      ColumnarToRow
          ProjectExecTransformer
             BatchScan
   ```
   We don't fallback the ProjectExecTransformer.
   And If we do that, we should insert the PartialProject rule in a more 
reasonable location, not remove it.


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