Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/19394#discussion_r143315127
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkPlan.scala ---
@@ -280,13 +280,20 @@ abstract class SparkPlan extends QueryPlan[SparkPlan]
with Logging with Serializ
results.toArray
}
+ private[spark] def executeCollectIterator(): (Long,
Iterator[InternalRow]) = {
+ val countsAndBytes = getByteArrayRdd().collect()
+ val total = countsAndBytes.map(_._1).sum
+ val rows = countsAndBytes.iterator.map(_._2).flatMap(decodeUnsafeRows)
--- End diff --
-> `flatMap(o => decodeUnsafeRows(o._2))`
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