RivenSun2 commented on PR #12041:
URL: https://github.com/apache/kafka/pull/12041#issuecomment-1100594620

   Hi @C0urante Thanks for your reply, I understand what you mean.
   I also agree to `ignore` all ignoreConfig together.
   
   But take the two parameters of KafkaProducer as an example (there are many 
similar situations in KafkaConsumer):
   `enable.idempotence`    `transactional.id`
   
   Regardless of whether the user has passed in these two parameters, they will 
always be `used` because of the internal behavior of kafka to retrieve these 
two configurations to do some logic.
   
   Our current intention is to call the `ignore` method uniformly if the 
configuration is not retrieved due to the special behavior of Kafka.
   
   The logUnused method may work better when users use custom plugins and 
configurations.
   
   WDYT? @guozhangwang 
   
   Thanks.


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