Github user jerryshao commented on a diff in the pull request:
https://github.com/apache/spark/pull/7250#discussion_r34218984
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/StreamingContext.scala ---
@@ -674,6 +676,8 @@ class StreamingContext private[streaming] (
logWarning("StreamingContext has already been stopped")
case ACTIVE =>
scheduler.stop(stopGracefully)
+ // De-registering Streaming Metrics of the StreamingContext
+ env.metricsSystem.removeSource(streamingSource)
--- End diff --
What I mean is to move this line out of `ACTIVE` condition, In any case
have to deregister the metrics source, not only in `ACTIVE` state.
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