cloud-fan 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_r288823181
##########
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:
for file source table, there will be row count stats if CBO is enabled.
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