[jira] [Created] (KAFKA-17536) Ensure clear error message when "new" consumer used with incompatible cluster

["Kirk True (Jira)" <ji...@apache.org>]

Kirk True created KAFKA-17536:
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             Summary: 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
            Assignee: Kirk True
             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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