StephanEwen opened a new pull request #12271:
URL: https://github.com/apache/flink/pull/12271
## What is the purpose of the change
The `flink-runtime` uses the `InputStatus` enum in its
`PushingAsyncDataInput`.
The `SourceReader` in `flink-core` has a separate enum with the same purpose
(1:1 correspondence).
In the `SourceOperator` we need to bridge between these two, which is clumsy
and a bit inefficient.
This PR makes `InputStatus` a part of the `flink-core` I/O packages and uses
it in the `SourceReader` directly, to avoid having to bridge it and the runtime
part.
## Verifying this change
This change is a simple refactoring with no changes in functionality.
## 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): **yes**
- 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 introduce a new feature? **no**
- If yes, how is the feature documented? **not applicable**
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