cloud-fan commented on a change in pull request #25264:
[SPARK-28213][SQL][followup] code cleanup and bug fix for columnar execution
framework
URL: https://github.com/apache/spark/pull/25264#discussion_r308037696
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/WholeStageCodegenExec.scala
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@@ -870,55 +859,41 @@ case class CollapseCodegenStages(
/**
* Inserts an InputAdapter on top of those that do not support codegen.
*/
- private def insertInputAdapter(plan: SparkPlan, isColumnarInput: Boolean):
SparkPlan = {
- val isColumnar = adjustColumnar(plan, isColumnarInput)
+ private def insertInputAdapter(plan: SparkPlan): SparkPlan = {
plan match {
case p if !supportCodegen(p) =>
// collapse them recursively
- InputAdapter(insertWholeStageCodegen(p, isColumnar), isColumnar)
+ InputAdapter(insertWholeStageCodegen(p))
case j: SortMergeJoinExec =>
// The children of SortMergeJoin should do codegen separately.
j.withNewChildren(j.children.map(
- child => InputAdapter(insertWholeStageCodegen(child, isColumnar),
isColumnar)))
- case p =>
- p.withNewChildren(p.children.map(insertInputAdapter(_, isColumnar)))
+ child => InputAdapter(insertWholeStageCodegen(child))))
+ // `ColumnarToRowExec` is kind of a leaf node to whole-stage-codegen.
Its generated code can
+ // process data from the input RDD directly.
+ case c: ColumnarToRowExec => c
Review comment:
no, because `ColumnarToRowExec` is leaf node of the codegen stage. But you
remind me that we should call `insertWholeStageCodegen`.
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