title: Nifi Picking Server for Wait\Notify Processors
body: <p>I am trying out the Wait\Notify Processors in Nifi 1.2 for the first time. In the Property for Distributed Cache Service I choose create new service.
  Under Properties of that service I just pick the hostname of the local  server where nifi is running as Server Hostname and all lights changed on go.</p>
  
  <p>But when i started the Prozessors I got this error messege:</p>
  
  <pre><code>2017-07-12 14:28:09,563 ERROR [Timer-Driven Process Thread-6]
  org.apache.nifi.processors.standard.Wait
  Wait[id=115238a2-299b-1267-98b6-14d1a4eb45e8] Failed to process
  session due to org.apache.nifi.processor.exception.ProcessException:
  Failed to get signal for TOC_2017cw14_WGS84_umts due to
  java.net.ConnectException: Connection refused: {}
  org.apache.nifi.processor.exception.ProcessException: Failed to get
  signal for TOC_2017cw14_WGS84_umts due to java.net.ConnectException:
  Connection refused
      at org.apache.nifi.processors.standard.Wait.onTrigger(Wait.java:354)
      at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
      at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1120)
      at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:147)
      at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:47)
      at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:132)
      at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
      at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
      at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
      at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      at java.lang.Thread.run(Thread.java:748)
   Caused by: java.net.ConnectException: Connection refused
      at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
      at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
      at sun.nio.ch.SocketAdaptor.connect(SocketAdaptor.java:111)
  </code></pre>