Detect correctly when one has disconnected from a standalone cluster.

SPARK-617 #resolve

core/src/main/scala/spark/deploy/client/Client.scala

@@ -35,6 +35,7 @@ private[spark] class Client(
 
   class ClientActor extends Actor with Logging {
     var master: ActorRef = null
+    var masterAddress: Address = null
     var alreadyDisconnected = false  // To avoid calling listener.disconnected() multiple times
 
     override def preStart() {
@@ -43,6 +44,7 @@ private[spark] class Client(
       val akkaUrl = "akka://spark@%s:%s/user/Master".format(masterHost, masterPort)
       try {
         master = context.actorFor(akkaUrl)
+        masterAddress = master.path.address
         master ! RegisterJob(jobDescription)
         context.system.eventStream.subscribe(self, classOf[RemoteClientLifeCycleEvent])
         context.watch(master)  // Doesn't work with remote actors, but useful for testing
@@ -72,7 +74,17 @@ private[spark] class Client(
           listener.executorRemoved(fullId, message.getOrElse(""))
         }
 
-      case Terminated(_) | RemoteClientDisconnected(_, _) | RemoteClientShutdown(_, _) =>
+      case Terminated(actor_) if actor_ == master =>
+        logError("Connection to master failed; stopping client")
+        markDisconnected()
+        context.stop(self)
+
+      case RemoteClientDisconnected(transport, address) if address == masterAddress =>
+        logError("Connection to master failed; stopping client")
+        markDisconnected()
+        context.stop(self)
+
+      case RemoteClientShutdown(transport, address) if address == masterAddress =>
         logError("Connection to master failed; stopping client")
         markDisconnected()
         context.stop(self)