twalthr opened a new pull request #13732:
URL: https://github.com/apache/flink/pull/13732
## What is the purpose of the change
This updates the `KafkaDynamicSource` and `KafkaDynamicSink` to read and
write metadata according to FLIP-107. Reading and writing metadata of formats
is not supported yet.
This PR is based on #13618.
## Brief change log
- Implement `SupportsReadingMetadata` and `SupportsWritingMetadata` in
source and sink
- Refactor Kafka source and sink accordingly
- Various minor improvements (see separate commits)
## Verifying this change
- Added a test in `KafkaTableITCase`
## 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/Mesos, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? yes
- If yes, how is the feature documented? JavaDocs
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