lincoln-lil opened a new pull request, #28505:
URL: https://github.com/apache/flink/pull/28505
## What is the purpose of the change
FLINK-34702 removed the dedicated StreamPhysicalDeduplicate metadata handler
and re-routed deduplication monotonicity through StreamPhysicalRank, but the
new dispatch guard only checked RankUtil.isDeduplication (Top-1 ROW_NUMBER
without rank number). It dropped the sortOnTimeAttributeOnly invariant the old
node type implicitly carried.
## Brief change log
- Tighten the guard to isDeduplication && sortOnTimeAttributeOnly
restoring the original logic.
- Add proper test cases
## Verifying this change
This change added tests and can be verified as follows:
- Added plan tests to RankTest.scala
- Added metadata tests to FlinkRelMdModifiedMonotonicityTest.scala
## 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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