Inkless version 0.37

Docker Images

docker pull ghcr.io/aiven/inkless:0.37
docker pull ghcr.io/aiven/inkless:latest

Kafka Versions

• Kafka 4.0.2: inkless-4.0.2-0.37
• Kafka 4.1.2: inkless-4.1.2-0.37

What's Changed

Some important refactoring and bug-fixes where introduced:

• feat(produce): optimize AppendCompleter to complete futures first by @Mwea in #529
• refactor(inkless): cache LogConfig in InklessMetadataView by @jeqo in #474
• refactor(inkless): improve thread pool lifecycle management by @jeqo in #475
• feat(inkless): add bytes limit to cache by @jeqo in #544
• refactor(inkless:consume): replace ByteRange.coalesce with BoundingRangeAlignment strategy by @jeqo in #532

Ongoing development of classic-to-diskless topic switcher feature has been merged:

• feat(storage:inkless): InitDisklessLog Diskless Controller API by @giuseppelillo in #528
• feat(metadata:diskless): implement managed replicas for diskless topics by @jeqo in #492
• feat(metadata:diskless): add controller metrics for diskless topics by @jeqo in #503
• feat(inkless): implement InitDisklessLog Controller API by @giuseppelillo in #531
• feat(inkless): Seal the local log when a topic is migrated from classic to diskless by @giuseppelillo in #533
• feat(diskless): add managed replicas routing to metadata transformer by @jeqo in #504
• feat(inkless): Add metrics for sealed partitions by @giuseppelillo in #534
• feat(storage:inkless): add control plane method for getting the producer states by @giuseppelillo in #530
• refactor(metadata:diskless): preserve leader epoch in metadata by @jeqo in #539
• feat(controller:diskless): enable immediate partition reassignment by @jeqo in #537
• feat(controller:diskless): add partitions support for diskless topics by @jeqo in #540
• feat(inkless): Expose InitDisklessLog controller API by @giuseppelillo in #541
• test(metadata:diskless): add integration tests for managed replicas by @jeqo in #542
• docs(docker:inkless): add managed replicas demo with test procedure by @jeqo in #543
• docs(inkless): add managed replicas documentation by @jeqo in #535

Tooling for our releases and upstream sync procedures have been merged as well:

• feat(inkless:sync): add upstream sync tooling and documentation by @jeqo in #498

New Contributors

• @Mwea made their first contribution in #529

Full Changelog: inkless-release-0.36...inkless-release-0.37

What's Changed

• fix(inkless): Fix error message when diskless.enable and remote.stora… by @giuseppelillo in #516
• chore(build): Set Docker API version 1.44 in Gradle config by @giuseppelillo in #519
• fix(inkless:test): Fix KafkaConfigTest for CLASSIC_REMOTE_STORAGE_FORCE_EXCLUDE_TOPIC_REGEXES_CONFIG by @giuseppelillo in #521
• feat(inkless:config): disallow setting diskless.enable if diskless storage system is disabled by @giuseppelillo in #520

Full Changelog: inkless-release-0.35...inkless-release-0.36

Docker Images

docker pull ghcr.io/aiven/inkless:0.36
docker pull ghcr.io/aiven/inkless:latest

Kafka Versions

• Kafka 4.0.0: inkless-4.0.0-0.36
• Kafka 4.1.1: inkless-4.1.1-0.36

What's Changed

• chore(inkless:release): add gh workflows to release inkless artifacts by @jeqo in #489
• chore(inkless): Update demo and documentation for GHCR images by @jeqo in #497
• chore(inkless:sync): upstream Apache Kafka 2025-11-21 (before 4.3.0-SNAPSHOT) by @jeqo in #499
• chore(ci): replace usage of JDK 23 with 25 by @giuseppelillo in #502
• chore(ci): use Docker API version 1.44 by @giuseppelillo in #509
• Disallow setting remote.storage.enable when diskless.enable is set to true by @giuseppelillo in #513
• feat(metadata): Introduce ClassicTopicRemoteStorageForcePolicy by @giuseppelillo in #514
• storage: add metrics constructor to InMemoryStorage by @jjaakola-aiven in #510

Full Changelog: inkless-release-0.34...inkless-release-0.35

Kafka-base tags

• Kafka 4.0: inkless-4.0.0-0.35
• Kafka 4.1: inkless-4.1.1-0.35

Docker images

docker pull ghcr.io/aiven/inkless:4.1.1-0.35
docker pull ghcr.io/aiven/inkless:4.0.0-0.35

What's Changed

• docs(inkless): add az-alignment feature documentation by @jeqo in #481
• docs(inkless): fix relation with kips on client-az awareness by @jeqo in #485
• docs(inkless): fix performance docs by @jeqo in #482
• docs(inkless): update readme with new sections and glossary by @jeqo in #483
• docs(inkless): update architecture diagram by @jeqo in #487
• refactor(metadata:diskless): fail on topic creation with replica assignment by @jeqo in #488
• chore(storage:inkless): add jooq classes by @jeqo in #490
• fix(storage:metrics): eagerly initialize meters with only topicType tag by @jeqo in #493
• Allow switching diskless.enable from false to true by @giuseppelillo in #486

Full Changelog: inkless-release-0.33...inkless-release-0.34

Kafka-base tags

• Kafka 4.0: inkless-4.0.0-0.34
• Kafka 4.1: inkless-4.1.1-0.34

Docker images

docker pull ghcr.io/aiven/inkless:4.1.1-0.34
docker pull ghcr.io/aiven/inkless:4.0.0-0.34

What's Changed

• refactor(inkless:metrics): only add topic-type tag on all topic stats by @jeqo in #472
• docs(inkless): add versioning strategy by @jeqo in #479

Full Changelog: inkless-release-0.32...inkless-release-0.33

Kafka-base tags

• Kafka 4.0: inkless-4.0.0-0.33
• Kafka 4.1: inkless-4.1.1-0.33

Docker images

docker pull ghcr.io/aiven/inkless:4.1.1-0.33
docker pull ghcr.io/aiven/inkless:4.0.0-0.33

Inkless Release 0.32

This release marks the transition to a new versioning strategy for Inkless. Going forward, versions use a global iteration counter that
is comparable across Kafka base branches. See versioning strategy for details.

Versioning change

Previous format: inkless-<kafka-version>-rc<N> (per-branch counters)

New format: inkless-<kafka-version>-<inkless-version> (global counter)

This makes it clear when different Kafka-based builds contain the same Inkless features.

Kafka-base tags

• Kafka 4.0.0: inkless-4.0.0-rc32
• Kafka 4.1.1: inkless-4.1.1-rc1

Changes since inkless-4.0.0-rc31 (636a1ea)

• Rate-limited fetch for lagging consumers (#467)
• Non-blocking fetch completion (#464)
• Remote fetches run only on data executor (#466)

Baseline

Based on commit d6c49967b15c. Subsequent releases will increment from 0.33.