[jira] [Created] (ZEPPELIN-3291) Throw exception instead of return null for InterpreterFactory.getInterpreter

[Jeff Zhang (JIRA)]

Jeff Zhang created ZEPPELIN-3291:
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             Summary: Throw exception instead of return null for 
InterpreterFactory.getInterpreter
                 Key: ZEPPELIN-3291
                 URL: https://issues.apache.org/jira/browse/ZEPPELIN-3291
             Project: Zeppelin
          Issue Type: Improvement
            Reporter: Jeff Zhang


For some cases we throw runtime exception, and for some other cases, just 
return null. It doesn't make sense to do that. This ticket is trying to 
refactor it to throw exception for all the cases. 



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