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What is the purpose of the change

A bit reasoning for the change

The reason is that since 1.28.0 ( CALCITE-4787 - Move core to use Immutables instead of ImmutableBeans ) Calcite started to use Immutables (https://immutables.github.io/) and since 1.29.0 removed ImmutableBeans ( CALCITE-4839 - Remove remnants of ImmutableBeans post 1.28 release ). All rule configuration related api which is not Immutables based is marked as deprecated. Since Immutables implies code generation while java compilation it is seems impossible to use for rules in Scala code.

Brief change log

  • The PR migrates MiniBatchIntervalInferRule to java
  • It doesn't touch tests to be sure that java version continues passing it.

Verifying this change

This change is already covered by existing tests.

Does this pull request potentially affect one of the following parts:

  • Dependencies (does it add or upgrade a dependency): (no)
  • The public API, i.e., is any changed class annotated with @Public(Evolving): ( no)
  • The serializers: (no)
  • The runtime per-record code paths (performance sensitive): (no)
  • Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (no)
  • The S3 file system connector: (no)

Documentation

  • Does this pull request introduce a new feature? (no)
  • If yes, how is the feature documented? (not applicable)

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flinkbot commented Jan 11, 2026

CI report:

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  • @flinkbot run azure re-run the last Azure build

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@liuyongvs liuyongvs left a comment

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LGTM +1

@github-actions github-actions bot added the community-reviewed PR has been reviewed by the community. label Jan 12, 2026
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3 participants