tomncooper commented on PR #161: URL: https://github.com/apache/flink-connector-kafka/pull/161#issuecomment-3103086215
@fapaul Usually the clients are backwards compatible. However, Kafka 4.0 dropped support for many APIs and the older log message formats. As per [the release notes](https://kafka.apache.org/40/documentation.html#upgrade_servers_400_notable): > Old protocol API versions have been removed. Users should ensure brokers are version 2.1 or higher before upgrading Java clients (including Connect and Kafka Streams which use the clients internally) to 4.0. The 4.0 [compatibility matrix](https://kafka.apache.org/40/documentation/compatibility.html) further lays out the server version compatibility and shows that ideally, users of the Kafka 4.0 clients should be running Kafka 3.0 or higher. I am happy with the version being whatever the community decides. My personal opinion is that we should, by bumping the major version of the connector, telegraph the fact that the connector version containing this PR will _drop_ support for broker on <=2.0 (and limit support for 2.1-2.8). -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
