Thesharing opened a new pull request #16688:
URL: https://github.com/apache/flink/pull/16688
## What is the purpose of the change
*This pull request aims to optimize the construction of pipelined regions.
For more details please visit FLINK-22773.*
## Brief change log
- *Make DefaultLogicalPipelinedRegion inherit from LogicalPipelinedRegion*
- *Make DefaultLogicalTopology inherit LogicalTopology*
- *Optimize the construction of pipelined regions*
## Verifying this change
*Since we don't change the original logic of constructing pipelined regions.
We believe the existing tests can cover our changes. Furthermore, we have
manually verified the change by running a word count job with 8k*8k
parallelism. The job finishes correctly.*
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (yes / **no**)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (yes / **no**)
- The serializers: (yes / **no** / don't know)
- The runtime per-record code paths (performance sensitive): (yes / **no**
/ don't know)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (**yes** / no / don't
know)
- The S3 file system connector: (yes / **no** / don't know)
## Documentation
- Does this pull request introduce a new feature? (yes / **no**)
- If yes, how is the feature documented? (**not applicable** / docs /
JavaDocs / not documented)
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