Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/19556#discussion_r146534666
--- Diff: core/src/main/scala/org/apache/spark/util/ClosureCleaner.scala ---
@@ -91,6 +91,50 @@ private[spark] object ClosureCleaner extends Logging {
(seen - obj.getClass).toList
}
+ /** Initializes the accessed fields for outer classes and their super
classes. */
+ private def initAccessedFields(
+ accessedFields: Map[Class[_], Set[String]],
+ outerClasses: Seq[Class[_]]): Unit = {
--- End diff --
what if multiple outer classes have the same parent class?
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