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
