Release Dates
(all are in 2023)
- KIP Freeze: 18th
- 22nd November ( Saturday
- Wednesday)
- 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: 8th 6th December (FridayWednesday)
- major features merged & working on stabilisation, minor features have PR, release branch cut; anything not in this state will be automatically moved to the next release in JIRA
- Code Freeze: 20th December (Wednesday)
- At least two weeks of stabilization will follow Code Freeze, meaning we expect to release no earlier than January 3rd. We will move as fast as we can, and aim completion the earliest we can in January.
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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
Open Issues
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If you do not see your KIP here and want to, please reply in to the mailing list thread about the release discussion page!
KIP | JIRA | Component | Status | ||||||||||||||||
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KIP-405: Kafka Tiered Storage |
| core | A major part went out with 3.6.0. A minor part of the KIP is to be completed in 3.7.0. . | ||||||||||||||||
KIP-580: Exponential Backoff for Kafka Clients |
| clients | Done | ||||||||||||||||
KIP-714: Client metrics and observability |
| core | Done A few minor improvements in the next release. | ||||||||||||||||
KIP-848: The Next Generation of the Consumer Rebalance Protocol |
| core | KIP Accepted Targetting a Preview in 3.7 | ||||||||||||||||
KIP-858: Handle JBOD broker disk failure in KRaft |
| core | KIP Accepted Implementation not yet completed | ||||||||||||||||
KIP-890: Transactions Server-Side Defense |
| core | Part 1 Completed | ||||||||||||||||
KIP-896: Remove old client protocol API versions in Kafka 4.0 - metrics/request log changes to identify deprecated apis |
| core | KIP has enough votes Nov 22, 72 hours not completed | ||||||||||||||||
KIP-919: Allow AdminClient to Talk Directly with the KRaft Controller Quorum and add Controller Registration |
| core | KIP accepted | ||||||||||||||||
KIP-925: Rack aware task assignment in Kafka Streams |
| streams | Partially implemented in 3.6 | KIP Accepted | |||||||||||||||
KIP-951 - Leader discovery optimizations for the client |
| clients | Done | ||||||||||||||||
KIP-954: expand default DSL store configuration to custom types |
| streams | Done | ||||||||||||||||
KIP-959: Add BooleanConverter to Kafka Connect |
| connect | Done | ||||||||||||||||
KIP-960: Single-key single-timestamp IQv2 for state stores |
| streams | Done | ||||||||||||||||
KIP-962: Relax non-null key requirement in Kafka Streams |
| streams | Done | ||||||||||||||||
KIP-963: Additional metrics in Tiered Storage |
| core | KIP passed vote on November 21. Targetting 3.7 | ||||||||||||||||
KIP-968: Support single-key_multi-timestamp Interactive Queries (IQv2) for Versioned State Stores |
| streams | Done | ||||||||||||||||
KIP-970: Deprecate and remove Connect's redundant task configurations endpointKIP-938: Add more metrics for measuring KRaft performance |
| core | connect | Done (deprecation Majority was completed in 3.6. The remaining minority will be done now in 3.7.07.0, removal in 4.0.0) | |||||||||||||||
KIP-580975: Exponential Backoff Docker Image for Apache Kafka Clients |
| clients | Implemented Plan to release it in 3.7.0 |
| Done | ||||||||||||||
KIP-976: Cluster-wide dynamic log adjustment for Kafka Connect |
| connect | Done | ||||||||||||||||
KIP-978: Allow dynamic reloading of certificates with different DN / SANsKIP-770: Replace "buffered.records.per.partition" & "cache.max.bytes.buffering" with "{statestore.cache}/{input.buffer}.max.bytes" |
| streams | core | DonePartly implemented, PRs open for the rest but needs reviews | |||||||||||||||
KIP-858: Handle JBOD broker disk failure in KRaft979: Allow independently stop KRaft processes |
| core | KIP Accepted Implementation not yet completedDone | ||||||||||||||||
KIP-980: Allow creating connectors in a stopped state |
| connect | KIP is being voted on (2/3 binding so far) |
Postponed to subsequent release
Done | |||||||||||
KIP-985: Add reverseRange and reverseAll query over kv-store in IQv2 |
| streams | Done | ||||||||
KIP-988: Streams Standby Update Listener |
| streams | Done | ||||||||
KIP-992: Proposal to introduce IQv2 Query Types: TimestampedKeyQuery and TimestampedRangeQuery |
| streams | Done | ||||||||
KIP-1000: List Client Metrics Configuration Resources |
| core | Done | ||||||||
KIP-1001: Add CurrentControllerId Metric |
| core | Done |
Postponed to subsequent release
KIP | JIRA | Component | Status | ||||||||||||||||
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KIP-759: Unneeded repartition canceling | streams | KIP accepted | |||||||||||||||||
KIP-892: Transactional Semantics for StateStores | streams | KIP accepted | |||||||||||||||||
KIP-910: Update Source offsets for Source Connectors without producing records | Vote thread restarted on Nov 15 but no activity | ||||||||||||||||||
KIP-912: Support decreasing send's block time without worrying about metadata's fetch | Vote thread started Nov 13 - no activity | ||||||||||||||||||
KIP-913: add new method to provide possibility for accelerate first record's sending | Vote thread started Nov 13 - no activity | ||||||||||||||||||
KIP-953: partition method to be overloaded to accept headers as well | Vote didn't pass | ||||||||||||||||||
KIP-956 Tiered Storage Quotas |
| core | Discussion started Nov 22 (KIP Freeze Date) | ||||||||||||||||
KIP-967: Support custom SSL configuration for Kafka Connect RestServer | Vote didn't pass | ||||||||||||||||||
KIP-969: Support range interactive queries (IQv2) for versioned state stores | streams | ||||||||||||||||||
KIP-977: Partition-Level Throughput Metrics | 2/3 binding votes on Nov 22 - didn't make the KIP Freeze | ||||||||||||||||||
KIP-982: Enhance Custom KafkaPrincipalBuilder to Access SslPrincipalMapper and KerberosShortNamer | Vote didn't pass. Just one binding vote | ||||||||||||||||||
KIP-997: update WindowRangeQuery and unify WindowKeyQuery and WindowRangeQuery | streams | Vote thread started November 17. Didn't get any votes by Nov 22 | |||||||||||||||||
KIP-938: Add more metrics for measuring KRaft performance |
| core | Accepted. Majority was completed in 3.6. The remaining minority was planned to be done in 3.7.0, but it slipped (no PR opened) | ||||||||||||||||
KIP-998: Give ProducerConfig(props, doLog) constructor protected access |
| clients | KIP Accepted No PR merged for 3.7. Slipped | KIP | JIRA | Component | Status