Jeremy Custenborder created KAFKA-5807:
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             Summary: NPE on Connector.validate
                 Key: KAFKA-5807
                 URL: https://issues.apache.org/jira/browse/KAFKA-5807
             Project: Kafka
          Issue Type: Bug
            Reporter: Jeremy Custenborder
            Assignee: Jeremy Custenborder
            Priority: Minor


NPE is thrown when a developer returns a null when overloading 
Connector.validate(). 

{code}
[2017-08-23 13:36:30,086] ERROR Stopping after connector error 
(org.apache.kafka.connect.cli.ConnectStandalone:99)
java.lang.NullPointerException
        at 
org.apache.kafka.connect.connector.Connector.validate(Connector.java:134)
        at 
org.apache.kafka.connect.runtime.AbstractHerder.validateConnectorConfig(AbstractHerder.java:254)
        at 
org.apache.kafka.connect.runtime.standalone.StandaloneHerder.putConnectorConfig(StandaloneHerder.java:158)
        at 
org.apache.kafka.connect.cli.ConnectStandalone.main(ConnectStandalone.java:93)
{code}





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