beliefer commented on code in PR #10545:
URL: 
https://github.com/apache/incubator-gluten/pull/10545#discussion_r2312242124


##########
gluten-substrait/src/main/scala/org/apache/gluten/execution/WholeStageTransformer.scala:
##########
@@ -446,10 +446,11 @@ case class WholeStageTransformer(child: SparkPlan, 
materializeInput: Boolean = f
 
       /**
        * the whole stage contains NO [[LeafTransformSupport]]. this the 
default case for:
-       *   1. SCAN with clickhouse backend (check 
ColumnarCollapseTransformStages#separateScanRDD())
-       *      2. test case where query plan is constructed from simple 
dataframes (e.g.
-       *      GlutenDataFrameAggregateSuite) in these cases, separate RDDs 
takes care of SCAN as a
-       *      result, genFinalStageIterator rather than genFirstStageIterator 
will be invoked
+       *   1. SCAN with clickhouse backend (check

Review Comment:
   I just want replace `ColumnarCollapseTransformStages#separateScanRDD()` with 
`BackendsApiManager.getSettings.excludeScanExecFromCollapsedStage()`, but the 
spotless make this change.



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