Release Dates

  • KIP Freeze:  (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:  (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:
  • At least two weeks of stabilization 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.

The release manager is David Jacot

How to Contribute

Before code freeze:

  • Participate in votes and discussions to land or postpone the open KIPs.
  • Review patches. We anticipate that this release, as it usually happens, will be bottlenecked mostly on reviews. The more reviewers, the more content we can fit in.
  • Write unit/integration/system tests. We want to preserve the tradition of high-quality releases in Apache Kafka. 

After code freeze:

  • Write more unit/integration/system testsWe 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.

Open Issues

key summary type created updated due assignee reporter priority status resolution

JQL and issue key arguments for this macro require at least one Jira application link to be configured


Also feel free to refer to this release page for more details of the included tickets (requires log in to the Apache Kafka Jira project).

Planned KIP Content

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.

KIPJIRAComponent
KIP-775: Custom partitioners in foreign key joins

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Streams
KIP-783: Add TaskId field to StreamsException

Unable to render Jira issues macro, execution error.

Streams
KIP-773: Differentiate consistently metric latency measured in millis and nanos

Unable to render Jira issues macro, execution error.

Clients
KIP-768: Extend SASL/OAUTHBEARER with Support for OIDC

Unable to render Jira issues macro, execution error.

Core/Clients
KIP-766: fetch/findSessions queries with open endpoints for SessionStore/WindowStore

Unable to render Jira issues macro, execution error.

Streams
KIP-763: Range queries with open endpoints

Unable to render Jira issues macro, execution error.

Streams
KIP-761: Add Total Blocked Time Metric to Streams

Unable to render Jira issues macro, execution error.

Streams
KIP-748: Add Broker Count Metrics

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Core
KIP-690: Add additional configuration to control MirrorMaker 2 internal topics naming convention

Unable to render Jira issues macro, execution error.

MirrorMaker
KIP-633: Deprecate 24-hour Default Grace Period for Windowed Operations in Streams

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Streams


Postponed to subsequent release

KIPJIRAComponent
KIP-726: Make the "cooperative-sticky, range" as the default assignor

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Clients
KIP-709: Extend OffsetFetch requests to accept multiple group ids.

Unable to render Jira issues macro, execution error.

Clients
KIP-708: Rack aware StandbyTask assignment for Kafka Streams

Unable to render Jira issues macro, execution error.

Streams
KIP-698: Add Explicit User Initialization of Broker-side State to Kafka Streams

Unable to render Jira issues macro, execution error.

Streams
KIP-691: Enhance Transactional Producer Exception Handling

Unable to render Jira issues macro, execution error.

Clients
KIP-627: Expose Trogdor-specific JMX Metrics for Tasks and Agents

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Trogdor
KIP-618: Exactly-Once Support for Source Connectors

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Connect
KIP-653: Upgrade log4j to log4j2

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Clients, Connect, Core, Streams
KIP-405: Kafka Tiered Storage

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Core
KIP-390: Support Compression Level

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Core, Clients
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