Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/22674#discussion_r223910145
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/util/QueryExecutionListener.scala
---
@@ -75,95 +76,74 @@ trait QueryExecutionListener {
*/
@Experimental
@InterfaceStability.Evolving
-class ExecutionListenerManager private extends Logging {
-
- private[sql] def this(conf: SparkConf) = {
- this()
+// The `session` is used to indicate which session carries this listener
manager, and we only
--- End diff --
The constructor is private, so we should not make it visible in the class
doc
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