title: How to solve the relationship failure?
body: <p>I have a processor that appears to be creating FlowFiles correctly (modified a standard processor), but when it goes to commit() the session, an exception is raised: </p>
  
  <p>2016-10-11 12:23:45,700 ERROR [Timer-Driven Process Thread-6] c.s.c.processors.files.GetFileData [GetFileData[id=8f5e644d-591c-4df1-8c79-feea118bd8c0]] Failed to retrieve files due to {}  org.apache.nifi.processor.exception.FlowFileHandlingException: StandardFlowFileRecord transfer relationship not specified </p>
  
  <p>I'm assuming this is supposed to be indicating there's no connection available to commit the transfer; however, there is a "success" relationship registered during init() in same way as original processor did it, and the success relationship out is connected to another processor input as it should be. </p>
  
  <p>Any suggestions for troubleshooting? </p>