Do not add log link for unmanaged AM in Spark UI

24/03/18 04:58:25,022 ERROR [spark-listener-group-appStatus] scheduler.AsyncEventQueue:97 : Listener AppStatusListener threw an exception
java.lang.NumberFormatException: For input string: "null"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:67) ~[?:?]
	at java.lang.Integer.parseInt(Integer.java:668) ~[?:?]
	at java.lang.Integer.parseInt(Integer.java:786) ~[?:?]
	at scala.collection.immutable.StringLike.toInt(StringLike.scala:310) ~[scala-library-2.12.18.jar:?]
	at scala.collection.immutable.StringLike.toInt$(StringLike.scala:310) ~[scala-library-2.12.18.jar:?]
	at scala.collection.immutable.StringOps.toInt(StringOps.scala:33) ~[scala-library-2.12.18.jar:?]
	at org.apache.spark.util.Utils$.parseHostPort(Utils.scala:1105) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.status.ProcessSummaryWrapper.<init>(storeTypes.scala:609) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.status.LiveMiscellaneousProcess.doUpdate(LiveEntity.scala:1045) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.status.LiveEntity.write(LiveEntity.scala:50) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.status.AppStatusListener.update(AppStatusListener.scala:1233) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.status.AppStatusListener.onMiscellaneousProcessAdded(AppStatusListener.scala:1445) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.status.AppStatusListener.onOtherEvent(AppStatusListener.scala:113) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.scheduler.SparkListenerBus.doPostEvent(SparkListenerBus.scala:100) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.scheduler.SparkListenerBus.doPostEvent$(SparkListenerBus.scala:28) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.scheduler.AsyncEventQueue.doPostEvent(AsyncEventQueue.scala:37) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.scheduler.AsyncEventQueue.doPostEvent(AsyncEventQueue.scala:37) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.util.ListenerBus.postToAll(ListenerBus.scala:117) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.util.ListenerBus.postToAll$(ListenerBus.scala:101) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.scheduler.AsyncEventQueue.super$postToAll(AsyncEventQueue.scala:105) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.scheduler.AsyncEventQueue.$anonfun$dispatch$1(AsyncEventQueue.scala:105) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at scala.runtime.java8.JFunction0$mcJ$sp.apply(JFunction0$mcJ$sp.java:23) ~[scala-library-2.12.18.jar:?]
	at scala.util.DynamicVariable.withValue(DynamicVariable.scala:62) ~[scala-library-2.12.18.jar:?]
	at org.apache.spark.scheduler.AsyncEventQueue.org$apache$spark$scheduler$AsyncEventQueue$$dispatch(AsyncEventQueue.scala:100) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.scheduler.AsyncEventQueue$$anon$2.$anonfun$run$1(AsyncEventQueue.scala:96) ~[spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.util.Utils$.tryOrStopSparkContext(Utils.scala:1356) [spark-core_2.12-3.5.1.jar:3.5.1]
	at org.apache.spark.scheduler.AsyncEventQueue$$anon$2.run(AsyncEventQueue.scala:96) [spark-core_2.12-3.5.1.jar:3.5.1]