Burn Lewis created UIMA-3972:
--------------------------------

             Summary: Specifying an invalid scheduling_class causes a NPE
                 Key: UIMA-3972
                 URL: https://issues.apache.org/jira/browse/UIMA-3972
             Project: UIMA
          Issue Type: Bug
          Components: DUCC
            Reporter: Burn Lewis
            Priority: Minor
             Fix For: future-DUCC


When registering a service or submitting a debug job an invalid scheduling 
class will produce a NPE with no stacktrace if using the cli scripts.
Adding --debug to a service registration produces:

Service call failed: java.lang.NullPointerException
java.lang.NullPointerException
        at 
org.apache.uima.ducc.common.utils.DuccSchedulerClasses.isPreemptable(DuccSchedulerClasses.java:109)
        at 
org.apache.uima.ducc.cli.DuccServiceApi.register(DuccServiceApi.java:414)
        at 
org.apache.uima.ducc.cli.DuccServiceApi.Register(DuccServiceApi.java:729)
        at org.apache.uima.ducc.cli.DuccServiceApi.main(DuccServiceApi.java:856)

For a debug job the exception is from the same place.




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