THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
Release Dates
- KIP Freeze: May 811, 2019 (a KIP must be accepted by this date in order to be considered for this release)
- Feature Freeze: May 1517, 2019 (major features merged & working on stabilization, minor features have PR, release branch cut; anything not in this state will be automatically moved to the next release in JIRA)
- Code Freeze: May 29, 2019
- Release: June 12, 2019 (target)
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This is a list of key features/improvements/bugfixes that we can include with release notes:
- There have been several improvements to the Kafka Connect REST API.
- Kafka Connect now supports incremental cooperative rebalancing.
- Kafka Streams now supports an inIn-memory session store and window store for Kafka Streams.
- A new broker metric indicating the start time.
Incremental cooperative rebalancing in Kafka Connect
- Return Authorized Operations in Describe Responses
- The AdminClient API now supports dynamically changing log levels
- MirrorMaker 2.0
- Verify leader epoch in produce requests
- Improved incremental AlterConfigs API
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- The AdminClient now allows users to determine what operations they are authorized to perform on topics.
- There is a new broker start time metric.
- JMXTool can now connect to secured RMI ports.
- An incremental AlterConfigs API has been added. The old AlterConfigs API has been deprecated.
- We now track partitions which are under their min ISR count.
- Consumers can now opt-out of automatic topic creation, even when it is enabled on the broker.
- Kafka components can now use external configuration stores (KIP-421)
- Improved replica fetcher behavior when errors are encounteredSupport non-key joining in KTable
How to Contribute
Before code freeze:
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- Write more unit/integration/system tests. We want to preserve the tradition of high-quality releases in Apache Kafka.
- Improve documentation
- Test the release candidates
- Open blocker JIRAs on critical issues found. Open non-blocker JIRAs on any other issues found.
- Fix critical bugs
- Review bug fixes
- Vote on RCs. Even though only PMC votes are binding, community votes are super important as we evaluate the readiness of the release
Open Issues
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Also feel free to refer to this release page for more details of the included tickets.
Planned KIP Content
See Kafka Improvement Proposals for the full list of KIPs.