Github user manuzhang commented on a diff in the pull request:

    https://github.com/apache/incubator-gearpump/pull/134#discussion_r97272651
  
    --- Diff: 
core/src/main/scala/org/apache/gearpump/cluster/client/RunningApplication.scala 
---
    @@ -40,6 +44,16 @@ class RunningApplication(val appId: Int, master: 
ActorRef, timeout: Timeout) {
         }
       }
     
    +  def waitUnilFinish(): Unit = {
    +    val delegator = system.actorOf(Props(new AppResultListener(appId, 
master)))
    +    val result = ActorUtil.askActor[ApplicationResult](delegator, 
WaitUntilFinish, INF_TIMEOUT)
    +    result match {
    +      case failed: ApplicationFailed =>
    +        throw failed.error
    +      case _ =>
    +    }
    +  }
    +
       def askAppMaster[T](msg: Any): Future[T] = {
    --- End diff --
    
    We already have one in `ActorUtil`. Why not reuse it ?


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