Github user skonto commented on a diff in the pull request:
https://github.com/apache/spark/pull/21930#discussion_r207008830
--- Diff: core/src/main/scala/org/apache/spark/util/ClosureCleaner.scala ---
@@ -159,6 +160,43 @@ private[spark] object ClosureCleaner extends Logging {
clean(closure, checkSerializable, cleanTransitively, Map.empty)
}
+ /**
+ * Try to get a serialized Lambda from the closure.
+ *
+ * @param closure the closure to check.
+ */
+ private def getSerializedLambda(closure: AnyRef):
Option[SerializedLambda] = {
+ if (scala.util.Properties.versionString.contains("2.11")) {
+ return None
+ }
+ val isClosureCandidate =
+ closure.getClass.isSynthetic &&
+ closure
+ .getClass
+ .getInterfaces.exists{x: Class[_] =>
x.getName.equals("scala.Serializable") }
--- End diff --
Need to test, I think I had to use it.
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