Zakelly opened a new pull request, #24678:
URL: https://github.com/apache/flink/pull/24678
## What is the purpose of the change
This is a simple PR that wire the new introduced operators of DataStream V2
with the `AbstractAsyncStateStreamOperator`.
## Brief change log
- Introduce `AbstractAsyncStateUdfStreamOperator` that is nearly identical
with `AbstractUdfStreamOperator`, but extends from
`AbstractAsyncStateStreamOperator`
- Replace base class of `ProcessOperator` (v2) from
`AbstractUdfStreamOperator` to `AbstractAsyncStateUdfStreamOperator`.
## Verifying this change
This change is a trivial rework without any test coverage. More will be
added when the whole state processing works.
## 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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