TsReaper opened a new pull request #13742:
URL: https://github.com/apache/flink/pull/13742
## What is the purpose of the change
As multiple input exec nodes have been introduced, we're going to construct
multiple input operators by a new construction algorithm. This PR introduces
such algorithm.
Multiple input optimization is currently not use by default and is only used
for tests as its operator is not ready. We'll change this once the multiple
input operator is ready.
## Brief change log
- Introduce multi-input operator construction algorithm
## Verifying this change
This change added tests and can be verified as follows: Run the newly added
tests.
## 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/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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