Github user xuanyuanking commented on a diff in the pull request:
https://github.com/apache/spark/pull/23128#discussion_r236926403
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/ShuffledRowRDD.scala ---
@@ -154,7 +156,10 @@ class ShuffledRowRDD(
override def compute(split: Partition, context: TaskContext):
Iterator[InternalRow] = {
val shuffledRowPartition = split.asInstanceOf[ShuffledRowRDDPartition]
- val metrics = context.taskMetrics().createTempShuffleReadMetrics()
+ val tempMetrics = context.taskMetrics().createTempShuffleReadMetrics()
+ // metrics here could be empty cause user can use ShuffledRowRDD
directly,
+ // so we just use the tempMetrics created in TaskContext in this case.
--- End diff --
Removing this.
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