jiangxb1987 commented on a change in pull request #25307: [SPARK-28574][CORE] 
Allow to config different sizes for event queues
URL: https://github.com/apache/spark/pull/25307#discussion_r309043848
 
 

 ##########
 File path: 
core/src/test/scala/org/apache/spark/scheduler/SparkListenerSuite.scala
 ##########
 @@ -532,6 +532,28 @@ class SparkListenerSuite extends SparkFunSuite with 
LocalSparkContext with Match
     }
   }
 
+  test("event queue size can be configued through spark conf") {
+    val conf = new SparkConf(false)
+      .set(LISTENER_BUS_EVENT_QUEUE_CAPACITY, 5)
+      .set("spark.scheduler.listenerbus.eventqueue.shared.capacity", "1")
+      .set("spark.scheduler.listenerbus.eventqueue.eventLog.capacity", "2")
 
 Review comment:
   similarly, I would use s`${EVENT_LOG_QUEUE}.capacity`

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