CPS794 opened a new pull request #14786:
URL: https://github.com/apache/flink/pull/14786
… of downstream operators when state cleaning is enabled
## What is the purpose of the change
This pull request makes MiniBatchGroupAggFunction and
MiniBatchGlobalGroupAggFunction emit messages when state cleaning is enabled.
That way we avoid too early state eviction of the downstream operators.
## Brief change log
- GroupAggFunction is currently doing so and we implement the same way for
MiniBatchGroupAggFunction and MiniBatchGlobalGroupAggFunction.
- If state cleaning is enabled, emit messages even if it's the same with a
previous row to prevent too early state eviction of downstream operators.
## Verifying this change
This change is already covered by existing tests, such as
org.apache.flink.table.planner.runtime.harness.GroupAggregateHarnessTest.
## 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/Mesos, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduces a new feature? no
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