twalthr opened a new pull request #18352:
URL: https://github.com/apache/flink/pull/18352
## What is the purpose of the change
This improves the function identifier string for anonymous/inline functions.
The new identifier has the following characteristics:
- If a function is not stateful, the identifier contains only the class
name. No custom hash.
- The anonymous/inline function nature is visible via `*...*` similar to
structured types.
- We use the pure class name to find classes easily (previously the
information about inner classes was lost via `$` instead of `.`).
## Brief change log
- Improved `functionIdentifier()`
- Updates plans.
## Verifying this change
This change added tests and can be verified as follows:
`UserFunctionHelperTest`
## 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)`: yes
- 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? JavaDocs
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