gengliangwang commented on a change in pull request #24666:
[SPARK-27482][SQL][WEBUI] Show BroadcastHashJoinExec numOutputRows statistics
info on SparkSQL UI page
URL: https://github.com/apache/spark/pull/24666#discussion_r288638013
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/BroadcastHashJoinExec.scala
##########
@@ -46,8 +46,13 @@ case class BroadcastHashJoinExec(
right: SparkPlan)
extends BinaryExecNode with HashJoin with CodegenSupport {
- override lazy val metrics = Map(
- "numOutputRows" -> SQLMetrics.createMetric(sparkContext, "number of output
rows"))
+ override lazy val metrics = {
+ Map("numOutputRows" ->
+ SQLMetrics.createMetric(
+ sparkContext,
+ "number of output rows",
+
logicalPlan.map(_.stats.rowCount.map(_.toLong).getOrElse(-1L)).getOrElse(-1L)))
Review comment:
IIRC, for file sources, usually there is only sizeInBytes stats in logical
plan level. So the estimated numOutputRows for logical plan should be empty
for file sources.
What is the scenario of this PR?
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