Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/18301#discussion_r124587586
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/BroadcastHashJoinExec.scala
---
@@ -91,6 +94,23 @@ case class BroadcastHashJoinExec(
}
/**
+ * Returns the codes used to add a task completion listener to update
avg hash probe
+ * at the end of the task.
+ */
+ private def genTaskListener(avgHashProbe: String, relationTerm: String):
String = {
+ val listenerClass = classOf[TaskCompletionListener].getName
+ val taskContextClass = classOf[TaskContext].getName
+ s"""
+ | $taskContextClass$$.MODULE$$.get().addTaskCompletionListener(new
$listenerClass() {
--- End diff --
maybe we can follow `incPeakExecutionMemory` and put it in
`BufferedRowIterator`
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