ueshin commented on code in PR #48829:
URL: https://github.com/apache/spark/pull/48829#discussion_r1842774971


##########
sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala:
##########
@@ -95,13 +95,12 @@ private[sql] object Dataset {
   def ofRows(sparkSession: SparkSession, logicalPlan: LogicalPlan): DataFrame =
     sparkSession.withActive {
       val qe = sparkSession.sessionState.executePlan(logicalPlan)
-      val encoder = if (qe.isLazyAnalysis) {
-        RowEncoder.encoderFor(new StructType())
+      if (qe.isLazyAnalysis) {

Review Comment:
   Now with this PR, the encoder creation is lazy only when 
`qe.isLazyAnalysis`, to be consistent with the current behavior. Also the 
previously failed test suggested to make it consistent.



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