Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/10779#discussion_r49919804
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/LiveListenerBus.scala ---
@@ -17,24 +17,169 @@
package org.apache.spark.scheduler
+import java.util.concurrent._
import java.util.concurrent.atomic.AtomicBoolean
-import org.apache.spark.util.AsynchronousListenerBus
+import scala.util.DynamicVariable
+
+import org.apache.spark.SparkContext
+import org.apache.spark.util.Utils
/**
* Asynchronously passes SparkListenerEvents to registered SparkListeners.
*
- * Until start() is called, all posted events are only buffered. Only
after this listener bus
+ * Until `start()` is called, all posted events are only buffered. Only
after this listener bus
* has started will events be actually propagated to all attached
listeners. This listener bus
- * is stopped when it receives a SparkListenerShutdown event, which is
posted using stop().
+ * is stopped when `stop()` is called, and it will drop further events
after stopping.
*/
-private[spark] class LiveListenerBus
- extends AsynchronousListenerBus[SparkListener,
SparkListenerEvent]("SparkListenerBus")
- with SparkListenerBus {
+private[spark] class LiveListenerBus extends SparkListenerBus {
--- End diff --
Most of the file are same as the removed `AsynchronousListenerBus.scala`.
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