VasShabu opened a new pull request, #29854:
URL: https://github.com/apache/flink/pull/29854
## What is the purpose of the change
Removes the built-in `DEDUPLICATE_KEEP_FIRST` process table function added
in FLINK-40896. It is replaced by the `DEDUPLICATE` and `DEDUPLICATE_WINDOW`
functions, and is removed before it ships in a release.
## Brief change log
- Removed the `DEDUPLICATE_KEEP_FIRST` entry from
`BuiltInFunctionDefinitions`, `DeduplicateKeepFirstTypeStrategy`, and the
`DeduplicateKeepFirst` runtime function
- Removed its semantic, restore and unit tests, including the restore-test
plans and savepoints
- Removed the `deduplicate-keep-first` reference page and the function's
row in the process table functions overview (English and `content.zh`)
- Removed the function from the `ValidationOnlyInputTypeStrategy` example
in `AGENTS.md`
The classic `ROW_NUMBER` deduplication operators are unaffected.
## Verifying this change
This change removes the function together with its tests and adds no new
behavior. It is covered by the existing `ProcessTableFunctionTest`,
`ProcessTableFunctionSemanticTests` and `ProcessTableFunctionRestoreTests`,
which pass.
## 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
---
##### Was generative AI tooling used to co-author this PR?
- [X] Yes (please specify the tool below)
Generated-by: Claude Code (Claude Sonnet 5.5, Claude Opus 5.5)
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