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https://issues.apache.org/jira/browse/KAFKA-17536?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kirk True reassigned KAFKA-17536:
---------------------------------
Assignee: (was: Kirk True)
> Ensure clear error message when "new" consumer used with incompatible cluster
> -----------------------------------------------------------------------------
>
> Key: KAFKA-17536
> URL: https://issues.apache.org/jira/browse/KAFKA-17536
> Project: Kafka
> Issue Type: Improvement
> Components: clients, consumer
> Affects Versions: 3.9.0
> Reporter: Kirk True
> Priority: Critical
> Labels: kip-848-client-support
> Fix For: 4.0.0
>
>
> In Kafka 4.0, by default the consumer uses the updated consumer group
> protocol defined in KIP-848. When the consumer is used with a cluster that
> does not support (or is not configured to use) the new protocol, the consumer
> will get an unfriendly error about unavailable APIs. Since this error could
> be the user's first impression when attempting to upgrade to 4.0, we need to
> make sure that the error is very clear about the remediation steps (set the
> group.protocol to CLASSIC on the client or upgrade and enable the new
> protocol on the cluster).
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