TsReaper opened a new pull request #15048:
URL: https://github.com/apache/flink/pull/15048
## What is the purpose of the change
Lookup joins related rules and nodes currently does not deal with
intermediate table scans. This might cause exceptions when the same lookup
table is joined multiple times. This PR fixes this bug.
## Brief change log
- Lookup joins now deal with intermediate table scans containing just the
table source correctly
## Verifying this change
This change added tests and can be verified by running the added tests.
## 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/Mesos, 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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