Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/15675#discussion_r86030545
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/StreamingQueryListenerBus.scala
---
@@ -50,7 +52,14 @@ class StreamingQueryListenerBus(sparkListenerBus:
LiveListenerBus)
override def onOtherEvent(event: SparkListenerEvent): Unit = {
event match {
case e: StreamingQueryListener.Event =>
- postToAll(e)
+ // SPARK-18144: we broadcast QueryStartedEvent to all listeners
attached to this bus
+ // synchronously and to listeners attached to LiveListenerBus
asynchronously. Therefore,
+ // we need to ignore QueryStartedEvent if this method is called
within SparkListenerBus
+ // thread
+ if (Thread.currentThread().getName != "SparkListenerBus" ||
--- End diff --
nit: please use `!LiveListenerBus.withinListenerThread.value` instead.
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