Henning Schmiedehausen created KAFKA-2289:
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             Summary: KafkaProducer logs erroneous warning on startu.
                 Key: KAFKA-2289
                 URL: https://issues.apache.org/jira/browse/KAFKA-2289
             Project: Kafka
          Issue Type: Bug
          Components: clients
    Affects Versions: 0.8.2.1
            Reporter: Henning Schmiedehausen
            Priority: Trivial


When creating a new KafkaProducer using the 

KafkaProducer(KafkaConfig, Serializer<K>, Serializer<V>) constructor, Kafka 
will list the following lines, which are harmless but are still at WARN level:

WARN  [2015-06-19 23:13:56,557] 
org.apache.kafka.clients.producer.ProducerConfig: The configuration 
value.serializer = class XXXX was supplied but isn't a known config.
WARN  [2015-06-19 23:13:56,557] 
org.apache.kafka.clients.producer.ProducerConfig: The configuration 
key.serializer = class YYYY was supplied but isn't a known config.





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