[jira] [Created] (KAFKA-4434) KafkaProducer configuration is logged twice

["Ruben de Gooijer (JIRA)" <ji...@apache.org>]

Ruben de Gooijer created KAFKA-4434:
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             Summary: KafkaProducer configuration is logged twice
                 Key: KAFKA-4434
                 URL: https://issues.apache.org/jira/browse/KAFKA-4434
             Project: Kafka
          Issue Type: Bug
          Components: config
    Affects Versions: 0.10.0.1
            Reporter: Ruben de Gooijer
            Priority: Minor


The constructor of org.apache.kafka.clients.producer.KafkaProducer accepts a ProducerConfig which when constructed logs the configuration: https://github.com/apache/kafka/blob/0.10.0.1/clients/src/main/java/org/apache/kafka/common/config/AbstractConfig.java#L58 . 

However, when the construction of KafkaProducer proceeds the provided ProducerConfig is repurposed and another instance is created https://github.com/apache/kafka/blob/0.10.0.1/clients/src/main/java/org/apache/kafka/clients/producer/KafkaProducer.java#L323 which triggers another log with the same contents. 

At first sight this seems like unintended behaviour to me. At least it caused me to dive into it in order to verify if there weren't two producer instances running.



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