Jun Rao created KAFKA-5858:
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             Summary: consumer.poll() shouldn't throw exception due to 
deserialization error
                 Key: KAFKA-5858
                 URL: https://issues.apache.org/jira/browse/KAFKA-5858
             Project: Kafka
          Issue Type: Improvement
    Affects Versions: 0.11.0.0
            Reporter: Jun Rao


Currently, the new consumer will throw an exception in poll() if it hits a 
deserialization error. The consumer then can't make progress from this point 
on. It will be better to throw the deserialization exception only when the 
key/value of the ConsumerRecord is accessed, like the old consumer does.



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