Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/19211#discussion_r139180525 --- Diff: core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala --- @@ -217,7 +217,7 @@ private[spark] class ExecutorAllocationManager( * the scheduling task. */ def start(): Unit = { - listenerBus.addListener(listener) + listenerBus.addToQueue(listener, LiveListenerBus.EXECUTOR_MGMT_QUEUE) --- End diff -- will we have more queues in the future? If it's not too many, maybe we can use different methods, like `addToMGMTQueue`
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