Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18810#discussion_r131575786
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/WholeStageCodegenExec.scala
---
@@ -370,6 +370,12 @@ case class WholeStageCodegenExec(child: SparkPlan)
extends UnaryExecNode with Co
override def doExecute(): RDD[InternalRow] = {
val (ctx, cleanedSource) = doCodeGen()
+ val existLongFunction = ctx.existTooLongFunction
+ if (existLongFunction) {
+ logWarning(s"Function is too long, Whole-stage codegen disabled for
this plan:\n "
+ + s"$treeString")
--- End diff --
This could be very big. Please follow what did in
https://github.com/apache/spark/pull/18658
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