Poorvankbhatia opened a new pull request, #26819:
URL: https://github.com/apache/flink/pull/26819
## What is the purpose of the change
This pull request migrates CoGroupJoinITCase integration tests from
deprecated SourceFunction/SinkFunction APIs to modern Source V2 and Sink V2
APIs.
## Brief change log
- Replaced 5 inline SourceFunction implementations with env.fromData()
calls for static test data
- Migrated 3 SinkFunction implementations to custom CollectingSink using
Sink V2 API
- Maintained identical test behavior and assertions while modernizing the
underlying APIs
## Verifying this change
This change is already covered by existing tests, such as:
- All test methods in CoGroupJoinITCase (testCoGroup, testJoin,
testSelfJoin, testCoGroupOperatorWithCheckpoint)
- Tests verify identical windowed join/coGroup behavior with updated APIs
- Same expected results and assertions maintained across the migration.
## 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? (not applicable)
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