Ngone51 commented on a change in pull request #32868:
URL: https://github.com/apache/spark/pull/32868#discussion_r656371420



##########
File path: 
core/src/main/scala/org/apache/spark/deploy/worker/WorkerWatcher.scala
##########
@@ -45,7 +50,14 @@ private[spark] class WorkerWatcher(
   private val expectedAddress = RpcAddress.fromURIString(workerUrl)
   private def isWorker(address: RpcAddress) = expectedAddress == address
 
-  private def exitNonZero() = if (isTesting) isShutDown = true else 
System.exit(-1)
+  private def exitNonZero() =
+    if (isTesting) {
+      isShutDown = true
+    } else {
+      ThreadUtils.awaitResult(Future {

Review comment:
       BTW, I have submitted the new 
PR(https://github.com/apache/spark/pull/33028). Please help review. And we can 
have more discussion there.




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