Hello Kafka users, developers and client-developers,
This is the first candidate for release of Apache Kafka 3.9.0. - This is a major release, the final one in the 3.x line. (There may of course be other minor releases in this line, such as 3.9.1.) - Tiered storage will be considered production-ready in this release. - This will be the final major release to feature the deprecated ZooKeeper mode. This release includes the following KIPs: - KIP-853: Support dynamically changing KRaft controller membership - KIP-1057: Add remote log metadata flag to the dump log tool - KIP-1049: Add config log.summary.interval.ms to Kafka Streams - KIP-1040: Improve handling of nullable values in InsertField, ExtractField, and other transformations - KIP-1031: Control offset translation in MirrorSourceConnector - KIP-1033: Add Kafka Streams exception handler for exceptions occurring during processing - KIP-1017: Health check endpoint for Kafka Connect - KIP-1025: Optionally URL-encode clientID and clientSecret in authorization header - KIP-1005: Expose EarliestLocalOffset and TieredOffset - KIP-950: Tiered Storage Disablement - KIP-956: Tiered Storage Quotas Release notes for the 3.9.0 release: https://home.apache.org/~cmccabe/kafka-3.9.0-rc0/RELEASE_NOTES.html *** Please download, test and vote by September 23, 2024. Kafka's KEYS file containing PGP keys we use to sign the release: https://kafka.apache.org/KEYS * Release artifacts to be voted upon (source and binary): https://home.apache.org/~cmccabe/kafka-3.9.0-rc0/ * Docker release artifacts to be voted upon: apache/kafka:3.9.0-rc0 apache/kafka-native:3.9.0-rc0 * Maven artifacts to be voted upon: https://repository.apache.org/content/groups/staging/org/apache/kafka/ * Javadoc: https://home.apache.org/~cmccabe/kafka-3.9.0-rc0/javadoc/ * Documentation: https://kafka.apache.org/39/documentation.html * Protocol: https://kafka.apache.org/39/protocol.html * Tag to be voted upon (off 3.9 branch) is the 3.9.0-rc0 tag: https://github.com/apache/kafka/releases/tag/3.9.0-rc0 I've run several successful junit and ducktape builds. While there were some flaky tests, when re-running them, they passed. * Successful Docker Image Github Actions Pipeline for 3.8 branch: Docker Build Test Pipeline (JVM): https://github.com/apache/kafka/actions/runs/10912118987 Docker Build Test Pipeline (Native): https://github.com/apache/kafka/actions/runs/10914303515 Thanks to everyone who helped with this release candidate, either by contributing code, testing, or documentation. Regards, Colin