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Posted to jira@kafka.apache.org by "Ismael Juma (JIRA)" <ji...@apache.org> on 2018/10/21 02:31:00 UTC

[jira] [Created] (KAFKA-7524) Recommend Scala 2.12 and use it for development

Ismael Juma created KAFKA-7524:
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             Summary: Recommend Scala 2.12 and use it for development
                 Key: KAFKA-7524
                 URL: https://issues.apache.org/jira/browse/KAFKA-7524
             Project: Kafka
          Issue Type: Improvement
            Reporter: Ismael Juma
            Assignee: Ismael Juma
             Fix For: 2.2.0


Scala 2.12 has better support for newer Java versions and includes additional compiler warnings that are helpful during development. In addition, Scala 2.11 hasn't been supported by the Scala community for a long time, the soon to be released Spark 2.4.0 will finally support Scala 2.12 (this was the main reason preventing many from upgrading to Scala 2.12) and Scala 2.13 is at the RC stage. It's time to start recommending the Scala 2.12 build as we prepare support for Scala 2.13 and start thinking about removing support for Scala 2.11.

In the meantime, Jenkins will continue to build all supported Scala versions (including Scala 2.11) so the PR and trunk jobs will fail if people accidentally use methods introduced in Scala 2.12.



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