Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/18306#discussion_r136410312
--- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala ---
@@ -562,6 +563,8 @@ class SparkContext(config: SparkConf) extends Logging {
}
_cleaner.foreach(_.start())
+ _stopHooks = new SparkShutdownHookManager()
--- End diff --
there's already a shutdown hook to call sc.stop() - perhaps just add the
clean up in stop()
https://github.com/aray/spark/blob/005472ed10fad3d1bc8feff12fc55c5682724a0e/core/src/main/scala/org/apache/spark/SparkContext.scala#L584
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