Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/9116#discussion_r42010758
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/StreamingContext.scala ---
@@ -694,31 +694,39 @@ class StreamingContext private[streaming] (
* @param stopGracefully if true, stops gracefully by waiting for the
processing of all
* received data to be completed
*/
- def stop(stopSparkContext: Boolean, stopGracefully: Boolean): Unit =
synchronized {
- try {
- state match {
- case INITIALIZED =>
- logWarning("StreamingContext has not been started yet")
- case STOPPED =>
- logWarning("StreamingContext has already been stopped")
- case ACTIVE =>
- scheduler.stop(stopGracefully)
- // Removing the streamingSource to de-register the metrics on
stop()
- env.metricsSystem.removeSource(streamingSource)
- uiTab.foreach(_.detach())
- StreamingContext.setActiveContext(null)
- waiter.notifyStop()
- if (shutdownHookRef != null) {
- ShutdownHookManager.removeShutdownHook(shutdownHookRef)
- }
- logInfo("StreamingContext stopped successfully")
+ def stop(stopSparkContext: Boolean, stopGracefully: Boolean): Unit = {
+ var shutdownHookRefToRemove: AnyRef = null
--- End diff --
Yes I get that; was mostly wondering whether a second variable was needed
at all. I think it is, to fully preserve the way it works now. This seems OK.
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