Github user andrewor14 commented on the pull request:

    https://github.com/apache/spark/pull/7066#issuecomment-116801704
  
    Actually, have you considered the following alternative? We modify 
`YarnClientSchedulerBackend#start` to call `super.start()` *after* we have 
submitted the application:
    ```
      override def start() {
        ...
        client = new Client(args, conf)
        appId = client.submitApplication()
        /* Moved from beginning of the method */
        super.start()
        waitForApplication()
        monitorThread = asyncMonitorApplication()
        monitorThread.start()
      }
    ```


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