twalthr opened a new pull request #13618:
URL: https://github.com/apache/flink/pull/13618
## What is the purpose of the change
This enables metadata columns in the planner. Both `SupportsReadingMetadata`
and `SupportsWritingMetadata` are fully supported for sources and sinks.
## Brief change log
- Reimplement `CatalogTable` to `RelNode` logic for sources.
- Reimplement `CatalogTable` to `RelNode` logic for sinks.
- Support `SupportsReadingMetadata`.
- Support `SupportsWritingMetadata`.
- Support `SupportsReadingMetadata together with
`SupportsProjectionPushDown`.
- Update `TestValuesTableFactory` to support the new interfaces.
- Several exception and code improvements
## Verifying this change
This change added tests and can be verified as follows:
- `TableScanTest`
- `TableSinkTest`
- `TableSourceITCase`
- `TableSinkITCase`
## 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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