hmit opened a new pull request, #21911:
URL: https://github.com/apache/flink/pull/21911
## What is the purpose of the change
This fixes issue when flink job using join/cogroup is run with
autoGenerateUid disabled. With uid generation disabled, the input ->
map-for-union throws a missing Uid exception from StreamGraphUtils.
This PR fixes the issue by assigning a unique and consistent uid based on
input operator's uid for consistency.
## Brief change log
- Generate unique and consistent UID for internal Map operators used in
CoGroupedStreams
## Verifying this change
Please make sure both new and modified tests in this PR follows the
conventions defined in our code quality guide:
https://flink.apache.org/contributing/code-style-and-quality-common.html#testing
This change is already covered by existing tests, such as *(please describe
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, ZooKeeper: yes
- 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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