cloud-fan commented on code in PR #48829:
URL: https://github.com/apache/spark/pull/48829#discussion_r1839698559
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sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala:
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@@ -95,13 +95,11 @@ 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())
- } else {
+ if (!qe.isLazyAnalysis) {
qe.assertAnalyzed()
- RowEncoder.encoderFor(qe.analyzed.schema)
}
- new Dataset[Row](qe, encoder)
+ val encoder = () => RowEncoder.encoderFor(qe.analyzed.schema)
+ new Dataset[Row](qe, encoder())
Review Comment:
Does it mean we define a function and then invoke the function immediately?
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