Guozhang Wang created KAFKA-9033:
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Summary: Change default client-id in consumer / producer to be
more meaningful
Key: KAFKA-9033
URL: https://issues.apache.org/jira/browse/KAFKA-9033
Project: Kafka
Issue Type: Improvement
Components: clients
Reporter: Guozhang Wang
Right now in consumer / producer, the default client-id is set as
{{consumer-[suffix]}} and {{producer-[suffix]}} which is not very meaningful;
on the other hand, since client-ids will be shown on the broker request logs it
can be very useful for debugging purposes.
So I'd propose we change their default values as the following:
1. For producer:
{{producer-[transactionalId]-[suffix]}} where {{transactionalId}} would be set
to {{none}} if null.
2. For consumer:
{{consumer-[groupId]-[instanceId or suffix]}} where {{groupId}} would be set to
{{none}} if null, and {{suffix}} would only be used if {{instanceId}} is set to
null.
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