ferenc-csaky opened a new pull request, #28959:
URL: https://github.com/apache/flink/pull/28959
## What is the purpose of the change
Integrate `VARIANT` handling to `flink-json` converters.
## Brief change log
- Added `VARIANT` deserialization support to both JSON tree and streaming
converters.
- Added `VARIANT` serialization support in the JSON row-data converter.
## Verifying this change
This change added tests and can be verified as follows:
- Added round-trip tests for nested `VARIANT` objects and arrays through
both JSON deserializers.
- Added coverage for scalar `VARIANT` values and variants nested in arrays,
maps, and rows.
- Added tests for duplicate JSON keys, JSON-null behavior, and rejection of
non-finite variant values during serialization.
## 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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##### Was generative AI tooling used to co-author this PR?
- [ ] Yes
Generated-by: openai/gpt-5.6-terra
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