Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/10779#discussion_r50173881
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/scheduler/StreamingListenerBus.scala
---
@@ -17,17 +17,28 @@
package org.apache.spark.streaming.scheduler
-import java.util.concurrent.atomic.AtomicBoolean
+import org.apache.spark.scheduler.{LiveListenerBus, SparkListener,
SparkListenerEvent}
+import org.apache.spark.util.ListenerBus
-import org.apache.spark.Logging
-import org.apache.spark.util.AsynchronousListenerBus
+/**
+ * A Streaming listener bus to forward events in
WrappedStreamingListenerEvent to StreamingListeners
--- End diff --
Add some docs to explain how this class works - why is it a listener, how
does it forward, etc.
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