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https://issues.apache.org/jira/browse/FLINK-37583?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fabian Paul updated FLINK-37583:
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Affects Version/s: kafka-4.0.1
> Upgrade Kafka Client version to 4.0.0
> -------------------------------------
>
> Key: FLINK-37583
> URL: https://issues.apache.org/jira/browse/FLINK-37583
> Project: Flink
> Issue Type: Improvement
> Affects Versions: kafka-4.0.1
> Reporter: Thomas Cooper
> Assignee: Thomas Cooper
> Priority: Major
> Labels: pull-request-available
>
> Kafka Client version 4.0.0 has been released. This has many performance
> improvements and security fixes so we should upgrade the
> flink-connector-kafka to use this version.
> It is backwards compatible with older Kafka versions, however as noted in the
> [release
> notes|https://kafka.apache.org/40/documentation.html#upgrade_servers_400_notable]:
> {quote}
> 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.
> {quote}
> Therefore, moving to this version will mean that the connector cannot be used
> with Kafka version 2.0 or older. Hopefully, users have upgraded beyond this
> point by now but it will need to be stated clearly.
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