Below is a summary of the JIRA issues addressed in the 3.3.1 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.