Inconsistency between notifications and documentation regarding deprecated functions

Confluent Cloud
1

Hello everyone,

we are using confluent cloud with different type of clients. Since a few days, for one of our clients we get the message, that it is using deprecated functions and
“deprecated clients will be removed from compatibility and result in unfulfilled client…”.
The deprecated function the client is using is “JoinGroup” (mentioned in the details).

When checking the documentation Client Deprecation in Confluent Cloud | Confluent Documentation, the JoinGroup is not listed.

Can someone give us the information, if the documentation is not correct, or if the notifications are not correct?

Thanks

2

It looks like JoinGroup support was removed in Apache Kafka 4.0.0 as part of KIP-896, but it has since been added back:

Apache Kafka 4.0.0 removed support for JoinGroup v0 and v1, but they were added back in 4.0.1 and 4.1.0 due to KAFKA-19444

Are you hitting an error or is that just a deprecation warning logged? If it’s the latter case, then I expect that it will go away in due time as Confluent Cloud clusters get upgraded.

3

Thanks,

currently it is only the warning.
We will than wait until it will be away again

4

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