9.0.1

Important

Please read the upgrade guide in https://github.com/line/decaton/releases/tag/v9.0.0 carefully

Breaking Changes

New Features

Bug Fixes

Improvements

• Lower log level of partition processor core creation, to be virtual thread friendly #245

Other Changes

9.0.0

Important

Please read the upgrade guide section carefully

Breaking Changes

• TaskMetadata as header (#238)
  • decaton-client:
    • DecatonClient no longer wraps tasks with DecatonTaskRequest-protobuf
  • decaton-processor:
    • DecatonTaskRequest is moved to com.linecorp.decaton.protocol.internal and marked as deprecated
    • Retry tasks are no longer produced in DecatonTaskRequest format unless decaton.retry.task.in.legacy.format is set to true
    • KafkaProducerSupplier signature change
    • TaskExtractor signature change
  • Please read below upgrade guide carefully!!!
• Make Decaton can consume any topic with deserializer (#241)
  • decaton-processor:
    • ProcessorsBuilder#consuming(String topic, Deserializer<T> deserializer) no longer parses messages as DecatonTaskRequest-protobuf at all, unless decaton.legacy.parse.fallback.enabled
  • Please read below upgrade guide carefully!!!

New Features

Bug Fixes

Improvements

Other Changes

• Fix potential key exposure in PKQ (#237)
• Add task batching doc (#150)
• Update docs and examples for 9.0.0 (#239)

Upgrade guide from 8.0.1 or earlier

• As described in "Breaking Changes" section, Decaton made two big breaking changes in this release.
• You MUST read below guide carefully and follow the instructions, or your application may encounter deserialization errors and fail to process tasks.

Depending on your use cases, there are 4 different upgrade paths.

Using retry queueing?	Using DecatonClient? (i.e. tasks are parsed by Deserializer rather than TaskExtractor)	Upgrade path
N	N	Case A
N	Y	Case B
Y	N	Case C
Y	Y	Case D

Case A: No retry queueing && non-DecatonClient

In this case, you can upgrade as usual without any special care.

• Step1: Upgrade decaton-processors to 9.0.0 or higher.
• That's it.

Case B: No retry queueing && DecatonClient

• Step1: Upgrade decaton-processors to 9.0.0 or higher with decaton.legacy.parse.fallback.enabled=true
• Step2: Upgrade decaton-clients to 9.0.0 or higher
• Step3: Wait all old-format tasks are processed after Step2.
  • You can monitor topic's committed offset is caught-up
• Step4: Set decaton.legacy.parse.fallback.enabled=false

Case C: Retry queueing && non-DecatonClient

• Step1: Upgrade decaton-processors to 9.0.0 or higher with decaton.retry.task.in.legacy.format=true, decaton.legacy.parse.fallback.enabled=true
• Step2: After all decaton-processors are upgraded, set decaton.retry.task.in.legacy.format=false
• Step3: Wait all retry tasks are processed after Step2.
  • You can monitor retry-topic's offset lag becomes 0.
• Step4: Set decaton.legacy.parse.fallback.enabled=false

Case D: Retry queueing && DecatonClient

• Step1: Upgrade decaton-processors to 9.0.0 or higher with decaton.retry.task.in.legacy.format=true, decaton.legacy.parse.fallback.enabled=true
• Step2: Upgrade decaton-clients to 9.0.0 or higher
• Step3: After all decaton-processors are upgraded, set decaton.retry.task.in.legacy.format=false
• Step4: Wait all old-format tasks and retry tasks are processed after Step3.
  • You can monitor topic's committed offset is caught-up and retry-topic's offset lag becomes 0.
• Step5: Set decaton.legacy.parse.fallback.enabled=false

8.0.1

Breaking Changes

New Features

Bug Fixes

• Use TopicPartition.topic for metrics #235

Improvements

Other Changes

• Bump dependencies (micrometer/tracing, spring-boot, central-dogma) #233
• Fix ResourceTracker in benchmark to work fine with VIRTUAL_THREAD #234

8.0.0

Breaking Changes

• Add virtual threads support #224
  • AsyncShutdownable interface was replaced to AsyncClose

New Features

• Add virtual threads support #224

Bug Fixes

Improvements

• Cache CD dynamic properties #222

Other Changes

7.2.0

Breaking Changes

New Features

• Add delivery latency and scheduled delay metrics (#218)

Bug Fixes

Improvements

• Some updates and improvements for the benchmark module (#219)
• New metrics follow up for #218 (#220)

Other Changes

• Drop Java8 support, upgrade gradle and junit (#214)
  • NOTE: Java8 is still supported because we reverted it in #215
• Bring back java 8 support (#215)

7.1.1

Breaking Changes

New Features

Bug Fixes

• Prevent non-RuntimeException causes completion-leak fixes #211 (#212)

Improvements

Other Changes

7.1.0

Breaking Changes

New Features

• Support spring boot 3 on decaton-spring #210

Bug Fixes

Improvements

Other Changes

7.0.0

Breaking Changes

• Make max.pending.records property reloadable (#207)

New Features

Bug Fixes

Improvements

Other Changes

6.5.0

Breaking Changes

New Features

• Support micrometer-tracing (#205)

Bug Fixes

Improvements

Other Changes

6.4.0

Breaking Changes

New Features

• Per-key quota fixes #167 (#192)

Bug Fixes

• Pass Count-Min parameters correctly (#204)

Improvements

Other Changes