Status

Current state:  "Under Discussion"Adopted

Discussion thread: link

Vote Discussion thread: link

JIRA: 

• Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key KAFKA-12930

   (3.0)

• Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key KAFKA-12895

   (4.0)
  

Please keep the discussion on the mailing list rather than commenting on the wiki (wiki discussions get unwieldy fast).

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Scala 2.12.0 was released in November 2016 and Scala 2.13.0 was released in June 2019. We expect Apache Kafka 3.0 to be released around July/August 2021 and 4.0 will be at least 16 months after that. Given this, we propose to deprecate Scala 2.12 support n in Apache Kafka 3.0 and to drop it in Apache Kafka 4.0. Users will have ample time and warning to migrate away from Scala 2.12.

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• Deprecate Scala 2.12 build in Kafka 3.0: update the documentation including downloads page.
• In Kafka 4.0:
  • Update build.gradle to remove all tasks for Scala 2.12 and remove code in build.gradle and dependencies.gradle that is conditional on Scala 2.12.
  • Update Readme not to mention Scala 2.12 as a supported version.
  • Remove any other workarounds needed by Scala 2.12.

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