cloud-fan commented on a change in pull request #33624:
URL: https://github.com/apache/spark/pull/33624#discussion_r681984379
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File path: sql/core/src/main/scala/org/apache/spark/sql/execution/Columnar.scala
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@@ -521,7 +499,8 @@ case class RowToColumnarExec(child: SparkPlan) extends
RowToColumnarTransition {
* to/from columnar formatted data.
*/
case class ApplyColumnarRulesAndInsertTransitions(
- columnarRules: Seq[ColumnarRule])
+ columnarRules: Seq[ColumnarRule],
+ outputColumnar: Boolean = false)
Review comment:
This is the new change. Previously we always assume that the final plan
should output row data and add `ColumnarToRowExec` if the plan is columnar. Now
the caller side can specify if the final plan should output columnar format or
not.
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