Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

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 Mickael Maison 

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

Jira
serverASF JIRA
columnIdsissuekey,summary,issuetype,created,updated,duedate,assignee,reporter,customfield_12311032,customfield_12311037,customfield_12311022,customfield_12311027,priority,status,resolution
columnskey,summary,type,created,updated,due,assignee,reporter,Priority,Priority,Priority,Priority,priority,status,resolution
maximumIssues20
jqlQueryproject = KAFKA AND fixVersion = 3.5.0 AND status not in (resolved, closed) ORDER BY priority DESC, status DESC, updated DESC
serverId5aa69414-a9e9-3523-82ec-879b028fb15b

Also feel free to refer to the 3.5.0 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.

KIPJIRAComponentStatus
KIP-405: Kafka Tiered Storage

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-7739

core
KIP-581: Value of optional null field which has default value

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-8713

connectDone
KIP-641 An new java interface to replace 'kafka.common.MessageReader'

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-10244

tool/clientDone
KIP-710: Full support for distributed mode in dedicated MirrorMaker 2.0 clusters

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-10586

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

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-12473

clients
KIP-770: Replace "buffered.records.per.partition" with "input.buffer.max.bytes"

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-13152

Streams
KIP-797: Accept duplicate listener on port for IPv4/IPv6

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-13299

corePR available
KIP-813: Shareable State Stores

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-10892

StreamsPR available
KIP-821: Connect Transforms support for nested structures

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-13656

connect
KIP-847: Add ProducerIdCount metrics

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-13999

coreDone
KIP-863: Reduce Fetcher#parseRecord() memory copy

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-14715

clientsPR available
KIP-866 ZooKeeper to KRaft Migration

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-14304

core
KIP-875: First-class offsets support in Kafka Connect

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-4107

connectPR1, PR2
KIP-884: Add config to configure KafkaClientSupplier in Kafka Streams

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-14395

StreamsDone
KIP-887: Add ConfigProvider to make use of environment variables

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-14376

clientsDone
KIP-889: Versioned State Stores

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-14491

StreamsDone
KIP-893: The Kafka protocol should support nullable structs

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-14425

coreDone
KIP-894: Use incrementalAlterConfig for syncing topic configurations 

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-14420

connectDone
KIP-900: KRaft kafka-storage.sh API additions to support SCRAM for Kafka Brokers

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-14765

coreDone

KIP-903: Replicas with stale broker epoch should not be allowed to join the ISR

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-14139

core

KIP-904: Kafka Streams - Guarantee subtractor is called before adder if key has not changed

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-12446

StreamsDone (system test missing)
KIP-907: Add Boolean Serde to public interface

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-14722

StreamsDone (only docs missing)
KIP-911: Add source tag to Mirror source metric

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-14740

connectDone
KIP-914: DSL Processor Semantics for Versioned Stores

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-14834

StreamsWIP

KIP-915: Txn and Group Coordinator Downgrade Foundation

Jira
serverASF JIRA
serverId5aa69414-a9e9-3523-82ec-879b028fb15b
keyKAFKA-14869

core


Postponed to subsequent release