Release Plan 2.6.0 (June 2020)

Release Dates

KIP Freeze: May 20, 2020 (a KIP must be accepted by this date in order to be considered for this release)
Feature Freeze: May 27, 2020 (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 10, 2020
Release: June 24, 2020 (Actual release: August 3, 2020)

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 Randall Hauch.

Planned KIPs

KIP	JIRA	Component
KIP-131 - Add access to OffsetStorageReader from SourceConnector	KAFKA-4794 - Getting issue details... STATUS	Connect
KIP-158: Kafka Connect should allow source connectors to set topic-specific settings for new topics	KAFKA-5295 - Getting issue details... STATUS	Connect
KIP-221: Enhance DSL with Connecting Topic Creation and Repartition Hint	KAFKA-6037 - Getting issue details... STATUS KAFKA-8611 - Getting issue details... STATUS	Streams
KIP-401: TransformerSupplier/ProcessorSupplier StateStore connecting	KAFKA-7523 - Getting issue details... STATUS	Streams
KIP-437: Custom replacement for MaskField SMT	KAFKA-6755 - Getting issue details... STATUS	Connect
KIP-441: Smooth Scaling Out for Kafka Streams (additional parts in 2.6)	KAFKA-8019 - Getting issue details... STATUS KAFKA-7149 - Getting issue details... STATUS KAFKA-6145 - Getting issue details... STATUS KAFKA-4696 - Getting issue details... STATUS	Streams
KIP-444: Augment metrics for Kafka Streams (additional parts in 2.6)	KAFKA-9753 - Getting issue details... STATUS KAFKA-9230 - Getting issue details... STATUS KAFKA-8856 - Getting issue details... STATUS KAFKA-7963 - Getting issue details... STATUS KAFKA-6820 - Getting issue details... STATUS KAFKA-6819 - Getting issue details... STATUS	Streams
KIP-446: Add changelog topic configuration to KTable suppress	KAFKA-8147 - Getting issue details... STATUS	Streams
KIP-447: Producer scalability for exactly once semantics (remainder in 2.6)	KAFKA-8587 - Getting issue details... STATUS KAFKA-6820 - Getting issue details... STATUS	Streams
KIP-518: Allow listing consumer groups per state	KAFKA-9130 - Getting issue details... STATUS	Core/Clients
KIP-519: Make SSL context/engine configuration extensible	KAFKA-8890 - Getting issue details... STATUS	Core/Clients
KIP-546: Add Client Quota APIs to the Admin Client (remainder in 2.6)	KAFKA-7740 - Getting issue details... STATUS	Core/Clients
KIP-551: Expose disk read and write metrics	KAFKA-9292 - Getting issue details... STATUS	Core
KIP-557: Add emit on change support for Kafka Streams (partially complete in 2.6)	KAFKA-8770 - Getting issue details... STATUS	Streams
KIP-568: Explicit rebalance triggering on the Consumer	KAFKA-9525 - Getting issue details... STATUS	Core/Clients
KIP-569: DescribeConfigsResponse - Update the schema to include additional metadata information of the field	KAFKA-9494 - Getting issue details... STATUS	Core/Clients
KIP-570: Add leader epoch in StopReplicaRequest	KAFKA-9539 - Getting issue details... STATUS	Core
KIP-571: Add option to force remove members in StreamsResetter	KAFKA-9146 - Getting issue details... STATUS	Streams
KIP-573: Enable TLSv1.3 by default	KAFKA-9320 - Getting issue details... STATUS	Core/Clients
KIP-574: CLI Dynamic Configuration with file input	KAFKA-9612 - Getting issue details... STATUS	Core
KIP 577: Allow HTTP Response Headers to be Configured for Kafka Connect	KAFKA-9944 - Getting issue details... STATUS	Connect
KIP-585: Filter and Conditional SMTs	KAFKA-9673 - Getting issue details... STATUS	Connect
KIP-586: Deprecate commit records without record metadata	KAFKA-9780 - Getting issue details... STATUS	Connect
KIP-594: Expose output topic names from TopologyTestDriver	KAFKA-9865 - Getting issue details... STATUS	Streams
KIP-602: Change default value for client.dns.lookup	KAFKA-9313 - Getting issue details... STATUS	Core/Clients
KIP-604: Remove ZooKeeper Flags from the Administrative Tools (partially complete in 2.6)	KAFKA-9945 - Getting issue details... STATUS KAFKA-10104 - Getting issue details... STATUS	Clients
KIP-605: Expand Connect Worker Internal Topic Settings	KAFKA-9931 - Getting issue details... STATUS	Connect
KIP-606: Add Metadata Context to MetricsReporter	KAFKA-9960 - Getting issue details... STATUS	Core/Connect/Streams
KIP-610: Error Reporting in Sink Connectors	KAFKA-9971 - Getting issue details... STATUS	Connect
KIP-613: Add end-to-end latency metrics to Streams (partially complete in 2.6)	KAFKA-9983 - Getting issue details... STATUS KAFKA-10054 - Getting issue details... STATUS	Streams

Postponed KIPs

KIP	JIRA	Component
KIP-81: Bound Fetch memory usage in the consumer	KAFKA-4133 - Getting issue details... STATUS	Clients
KIP-280: Enhanced log compaction	KAFKA-7061 - Getting issue details... STATUS	Core
KIP-359: Verify leader epoch in produce requests	KAFKA-7383 - Getting issue details... STATUS	Core
KIP-466: Add support for List<T> serialization and deserialization	KAFKA-8326 - Getting issue details... STATUS	Streams/Clients
KIP-497: Add inter-broker API to alter ISR	KAFKA-8836 - Getting issue details... STATUS	Core
KIP-557: Add emit on change support for Kafka Streams (remainder)	KAFKA-8770 - Getting issue details... STATUS	Streams
KIP-580: Exponential Backoff for Kafka Clients	KAFKA-9800 - Getting issue details... STATUS	Core/Clients
KIP-584: Versioning scheme for features	KAFKA-9755 - Getting issue details... STATUS	Core/Clients
KIP-588: Allow producers to recover gracefully from transaction timeouts	KAFKA-9803 - Getting issue details... STATUS	Core/Clients
KIP-604: Remove ZooKeeper Flags from the Administrative Tools (remainder)	KAFKA-9945 - Getting issue details... STATUS KAFKA-10104 - Getting issue details... STATUS	Clients
KIP-608 - Expose Kafka Metrics in Authorizer	KAFKA-9958 - Getting issue details... STATUS	Core
KIP-611: Improved Handling of Abandoned Connectors and Tasks	KAFKA-9975 - Getting issue details... STATUS	Connect
KIP-612: Ability to Limit Connection Creation Rate on Brokers	KAFKA-10023 - Getting issue details... STATUS KAFKA-10024 - Getting issue details... STATUS	Core
KIP-613: Add end-to-end latency metrics to Streams (remainder)	KAFKA-9983 - Getting issue details... STATUS KAFKA-10054 - Getting issue details... STATUS	Streams

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

Key	P	Summary	T	Assignee	Status	Created	Updated	Reporter	Resolution

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