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Release Dates
- KIP Freeze: May 22, 2018 (a KIP must be accepted by this date in order to be considered for this release)
- Feature Freeze: May 29, 2018 (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: June 12, 2018 (first RC created now)
- Release: June 26, 2018 (Tentatively)
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 target release date is fixed at ~2w after code freeze, RCs will roll out as needed until the release vote passes.
The release manager is Rajini Sivaram.
Release Features
This is a list of key features/improvements/bugfixes that we can include with release notes (WIP):
- In-order delivery with partition expansion (KIP-253)
- Additional functionality in AdminClient including consumer group management and config management
- SASL/OAUTHBEARER implementation (KIP-255)
- Improved quota communication and customization of quotas (KIP-219, KIP-257)
- Efficient memory usage for down conversion (KIP-283)
- Fix log divergence between leader and follower during fast leader failover (KIP-279)
- Drop support for Java 7 and remove deprecated code (e.g old scala clients)
- Scala API for Kafka Streams and other Streams API improvements (KIP-270, KIP-150, KIP-245, KIP-251 etc.)
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 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 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
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.
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.
KIP | JIRA | Component | Committer |
---|
KIP-81: Bound Fetch memory usage in the consumer |
Unable to render Jira issues macro, execution error.
| Consumer | Jason Gustafson |
KIP-86: Configurable SASL callback handlers |
Unable to render Jira issues macro, execution error.
| Security | Rajini Sivaram |
KIP-91 Provide Intuitive User Timeouts in The Producer |
Unable to render Jira issues macro, execution error.
| Producer | |
KIP-118: Drop Support for Java 7 |
Unable to render Jira issues macro, execution error.
| All | |
KIP-150 - Kafka-Streams Cogroup |
Unable to render Jira issues macro, execution error.
| Streams | Matthias Sax |
KIP-158: Kafka Connect should allow source connectors to set topic-specific settings for new topics |
Unable to render Jira issues macro, execution error.
| Connect | Ewen Cheslack-Postava |
KIP-174 - Deprecate and remove internal converter configs in WorkerConfig |
Unable to render Jira issues macro, execution error.
| Connect | Ewen Cheslack-Postava |
KIP-183 - Change PreferredReplicaLeaderElectionCommand to use AdminClient |
Unable to render Jira issues macro, execution error.
| AdminClient | Jun Rao |
KIP-186: Increase offsets retention default to 7 days |
Unable to render Jira issues macro, execution error.
| Broker | Jason Gustafson |
KIP-207: Offsets returned by ListOffsetsResponse should be monotonically increasing even during a partition leader change |
Unable to render Jira issues macro, execution error.
| Broker | |
KIP-211: Revise Expiration Semantics of Consumer Group Offsets |
Unable to render Jira issues macro, execution error.
| Consumer | Jason Gustafson |
KIP-219 - Improve quota communication |
Unable to render Jira issues macro, execution error.
| Broker,Clients | Dong Lin |
KIP-222 - Add Consumer Group operations to Admin API |
Unable to render Jira issues macro, execution error.
| AdminClient | guozhang Wang |
KIP-223 - Add per-topic min lead and per-partition lead metrics to KafkaConsumer |
Unable to render Jira issues macro, execution error.
| Consumer | Jun Rao |
KIP-237: More Controller Health Metrics |
Unable to render Jira issues macro, execution error.
| Broker | Jun Rao |
KIP-245: Use Properties instead of StreamsConfig in KafkaStreams constructor |
Unable to render Jira issues macro, execution error.
| Streams | guozhang Wang |
KIP-249: Add Delegation Token Operations to KafkaAdminClient |
Unable to render Jira issues macro, execution error.
| AdminClient | Jun Rao |
KIP-251: Allow timestamp manipulation in Processor API |
Unable to render Jira issues macro, execution error.
| Streams | Matthias Sax |
KIP-257 - Configurable Quota Management |
Unable to render Jira issues macro, execution error.
| Broker | Rajini Sivaram |
KIP-261: Add Single Value Fetch in Window Stores |
Unable to render Jira issues macro, execution error.
| Streams | guozhang Wang |
KIP-265: Make Windowed Serde to public APIs |
Unable to render Jira issues macro, execution error.
| Streams | guozhang Wang |
KIP-267: Add Processor Unit Test Support to Kafka Streams Test Utils |
Unable to render Jira issues macro, execution error.
| Streams | Matthias Sax |
KIP-268: Simplify Kafka Streams Rebalance Metadata Upgrade |
Unable to render Jira issues macro, execution error.
| Streams | Matthias Sax |
KIP-270 - A Scala Wrapper Library for Kafka Streams |
Unable to render Jira issues macro, execution error.
| Streams | guozhang Wang |
KIP-272: Add API version tag to broker's RequestsPerSec metric |
Unable to render Jira issues macro, execution error.
| Broker | Jason Gustafson |
KIP-274: Kafka Streams Skipped Records Metrics |
Unable to render Jira issues macro, execution error.
| Streams | guozhang Wang |
KIP-276 Add StreamsConfig prefix for different consumers |
Unable to render Jira issues macro, execution error.
| Streams | guozhang Wang |
KIP-279: Fix log divergence between leader and follower after fast leader fail over |
Unable to render Jira issues macro, execution error.
| Broker | Jun Rao |
KIP-284: Set default retention ms for Streams repartition topics to Long.MAX_VALUE |
Unable to render Jira issues macro, execution error.
| Streams | Matthias Sax |
KIP-285: Connect Rest Extension Plugin |
Unable to render Jira issues macro, execution error.
| Connect | Ewen Cheslack-Postava |
Postponed to subsequent release