lsyldliu opened a new pull request, #22990:
URL: https://github.com/apache/flink/pull/22990
## What is the purpose of the change
*HashAgg support operator fusion code generator, include without key and
with key case, also include one phase and two phase case. Please attention, we
only support multiple input operator fusion codegen, so the hashagg must be
fused with HashJoin operator.*
## Brief change log
- *HashAgg support operator fusion codegen*
## Verifying this change
This change added tests and can be verified as follows:
*(example:)*
- *Added related integration tests in OperatorFusionCodegenITCase*
## 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? (yes)
- If yes, how is the feature documented? (JavaDocs)
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