cloud-fan commented on code in PR #37743:
URL: https://github.com/apache/spark/pull/37743#discussion_r972131446
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sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/DataSourceRDD.scala:
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@@ -111,12 +111,16 @@ private class PartitionIterator[T](
reader: PartitionReader[T],
customMetrics: Map[String, SQLMetric]) extends Iterator[T] {
private[this] var valuePrepared = false
+ private[this] var prevHasNext = true
private var numRow = 0L
override def hasNext: Boolean = {
if (!valuePrepared) {
Review Comment:
can you follow the change in
https://github.com/apache/spark/pull/37900/files ? It can avoid entering this
if branch entirely.
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