lincoln-lil opened a new pull request, #20262:
URL: https://github.com/apache/flink/pull/20262
## What is the purpose of the change
Adds an internal abstraction PhysicalDagProcessor for physical plan
processing.
## Brief change log
* Adds an new internal abstraction: PhysicalDagProcessor
* Let SubplanReuser extends PhysicalDagProcessor
## Verifying this change
Existing test cases
## 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)
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