Release Notes - Kafka - Version 2.6.3

Below is a summary of the JIRA issues addressed in the 2.6.3 release of Kafka. For full documentation of the release, a guide to get started, and information about the project, see the Kafka project site.

Note about upgrades: Please carefully review the upgrade documentation for this release thoroughly before upgrading your cluster. The upgrade notes discuss any critical information about incompatibilities and breaking changes, performance changes, and any other changes that might impact your production deployment of Kafka.

The documentation for the most recent release can be found at https://kafka.apache.org/documentation.html.

Improvement

• [KAFKA-10675] - Error message from ConnectSchema.validateValue() should include the name of the schema.

Bug

• [KAFKA-10727] - Kafka clients throw AuthenticationException during Kerberos re-login
• [KAFKA-12252] - Distributed herder tick thread loops rapidly when worker loses leadership
• [KAFKA-12262] - New session keys are never distributed when follower with key becomes leader
• [KAFKA-12667] - Incorrect error log on StateDirectory close
• [KAFKA-12730] - A single Kerberos login failure fails all future connections from Java 9 onwards
• [KAFKA-12904] - Connect's validate REST endpoint uses incorrect timeout
• [KAFKA-13099] - Message too large error when expiring transactionalIds
• [KAFKA-13236] - TopologyTestDriver crashes with EOS-beta config

Task

• [KAFKA-12820] - Upgrade maven-artifact dependency to resolve CVE-2021-26291

Sub-task

• [KAFKA-12790] - Remove SslTransportLayerTest.testUnsupportedTlsVersion