fhueske opened a new pull request, #28803:
URL: https://github.com/apache/flink/pull/28803
## What is the purpose of the change
TimeIndicatorRelDataType.getOriginalType() does not reliably provide the
correct nullability. The planner might have changed the nullability on the time
indicator type without updating the nested original type. This change fixes the
outputType computation to use the same rowtime type conversion as
RelTimeIndicatorConverter.
## Brief change log
* fix logic to convert a time indicator type into a regular timestamp
preserving its actual nullability
* conversion logic is derived from `RelTimeIndicatorConverter`
## Verifying this change
* added unit tests to assert correct computation of lateral snapshot join
output type
## 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? n/a
---
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Generated-by: Claude Code 2.1.200 (Opus 4.8)
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