Kurt Hung created NIFI-2903:

             Summary: GetKafka cannot handle null value in Kafka offset cause 
                 Key: NIFI-2903
                 URL: https://issues.apache.org/jira/browse/NIFI-2903
             Project: Apache NiFi
          Issue Type: Bug
    Affects Versions: 0.7.0, 1.0.0
            Reporter: Kurt Hung

The GetKafka processor does not handle the condition of null value that exists 
in Kafka offset, which would cause the processor hang on and generate a 
NullPointerException after 30 sec. It's easy to reproduce this issue; I use the 
kafka-python to insert a key-value pair ("abc", None), and create a GetKafka 
processor to consume the topic I've created. This issue would happen 
immediately, and moreover, the processor could't consume rest offsets.

Temporary I customize a GetKafka processor for a "Failure" relationship to 
handle null values exist in Kafka offset to prevent this issue.

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