Release Dates
- KIP Freeze: [TBD] 26th July 23 (A KIP must be accepted by this date in order to be considered for this release. Note, any KIP that may not be implemented in a week, or that might destabilize the release, should be deferred.)
- Feature Freeze: [TBD] 16th Aug (major features merged & working on stabilizationstabilisation, minor features have PR, release branch cut; anything not in this state will be automatically moved to the next release in JIRA)
- Code Freeze: [TBD] 30th Aug 23
- At least two weeks of stabilization will stabilisation will follow Code Freeze.
These dates are goals and subject to change, but we expect to stay on the Time Based Release Plan unless unexpected critical issues come up. While the earliest possible release date is 2w after code freeze, release candidates (RCs) will roll out as needed until the release vote passes.
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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 release candidates. Even though only PMC votes are binding, community votes are super important as we evaluate the readiness of the release.
- Ensure that release candidates include artifacts for the new Connect test-plugins module (see
)Jira server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key KAFKA-15249
- Ensure that release candidates include artifacts for the new Connect test-plugins module (see
Open Issues
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Note: The planned content is not binding - final content will be based the features committed by branch-cutting date. See Kafka Improvement Proposals for the full list of KIPs.
KIP | JIRA | Component | Status | ||||||||||||
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KIP-405: Kafka Tiered Storage |
| core | Majority is completed. Remaining to be done in 3.7.0 | ||||||||||||
KIP-793: Allow sink connectors to be used with topic-mutating SMTs |
| connect | Completed | ||||||||||||
KIP-797: Accept duplicate listener on port for IPv4/IPv6 |
| core | Completed | ||||||||||||
KIP-868 Metadata Transactions |
| core | Completed | ||||||||||||
KIP-875: First-class offsets support in Kafka Connect |
| connect | Completed In prior releases: connector STOPPED state, offsets read API In this release: Offsets alter and reset APIs | ||||||||||||
KIP-890: Transactions Server-Side Defense |
| core | Part 1 Completed | ||||||||||||
KIP-898: Modernize Connect plugin discovery |
| connect | Completed | ||||||||||||
KIP-902: Upgrade Zookeeper to 3.8.2 |
| core | Completed | ||||||||||||
| core | Completed | |||||||||||||
| streams | KIP Accepted Implementation seems to be completed but yet to be confirmed by author. | |||||||||||||
| streams | Partially implemented in 3.6 | |||||||||||||
KIP-937: Improve Message Timestamp Validation |
| core | Completed | ||||||||||||
KIP-938: Add more metrics for measuring KRaft performance |
| core | KIP Accepted Majority is completed. Remaining to be done in 3.7.0 | ||||||||||||
| clients | Completed | |||||||||||||
| core | Completed | |||||||||||||
KIP-941: Range queries to accept null lower and upper bounds |
| streams | Completed |
Postponed to subsequent release
KIP | JIRA | Component | Status | ||||||||
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KIP-580: Exponential Backoff for Kafka Clients |
| clients | Implemented Plan to release it in 3.7.0 | ||||||||
KIP-726: Make the "cooperative-sticky, range" as the default assignor |
| clients | KIP Accepted Implementation not yet completed | ||||||||
KIP-770: Replace "buffered.records.per.partition" with "input.buffer.max.bytes" |
| streams | KIP Accepted Implementation in progress, not yet reviewed. | ||||||||
KIP |
-813: Shareable State Stores |
| streams | KIP Accepted Implementation not yet completed. | ||||||||||||
KIP-821: Connect Transforms support for nested structures |
| connect | KIP Accepted Implementation in progress | ||||||||||||
KIP-852: Optimize calculation of size for log in remote tier |
| core | KIP Accepted Partially completed | ||||||||||||
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| core | KIP |
Accepted Not yet completed | |||||||||
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| streams | Partially implemented in 3.6 | ||
KIP- |
938: Add more metrics for measuring KRaft performance |
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| core | KIP Accepted Majority is completed. Remaining to be done in 3.7.0 | |||||||
KIP-872: Add Serializer#serializeToByteBuffer() to reduce memory copying |
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| clients | KIP Accepted Not yet completed |
949: Add flag to enable the usage of topic separator in MM2 DefaultReplicationPolicy |
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| mirrormaker | KIP Accepted Not yet completed for 3.6.0. |