[jira] [Resolved] (KAFKA-9033) Change default client-id in consumer / producer to be more meaningful

["Jason Gustafson (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-9033?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jason Gustafson resolved KAFKA-9033.
------------------------------------
    Fix Version/s: 2.4.0
       Resolution: Fixed

> 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
>            Assignee: Jason Gustafson
>            Priority: Major
>             Fix For: 2.4.0
>
>
> 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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