Github user pwendell commented on a diff in the pull request: https://github.com/apache/spark/pull/5685#discussion_r29082998 --- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala --- @@ -1740,7 +1740,8 @@ class SparkContext(config: SparkConf) extends Logging with ExecutorAllocationCli * serializable */ private[spark] def clean[F <: AnyRef](f: F, checkSerializable: Boolean = true): F = { - ClosureCleaner.clean(f, checkSerializable) + val cleanTransitively = conf.getBoolean("spark.closureCleaner.transitive", true) --- End diff -- I'm not sure that it makes sense to flag this since (provided we add scopes) then every user program will break if this is toggled. I think this feature will need to be removed wholesale if there are issues.
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