Poorvankbhatia opened a new pull request, #26865:
URL: https://github.com/apache/flink/pull/26865
## What is the purpose of the change
This PR migrates all legacy SourceFunction usages in TimestampITCase to the
modern FLIP-27 Source V2 API
## Brief change log
-Replaced all env.addSource(...) usages with env.fromSource(...) using
Source V2
-Introduced timestampSource(...) factory and unified MyTimestampSourceV2 +
MyTimestampSourceInfiniteV2
-Consolidated MyTimestampSourceReader and MyTimestampSourceInfiniteReader
into a single TimestampSourceReader
-Replaced MySourceSplit and MySourceSplitSerializer with singleton-style
instances (SPLIT, SPLIT_SERIALIZER)
-Migrated tests like testTimestampExtractorWithDecreasingCustomWatermarkEmit
and testTimestampExtractorWithLongMaxWatermarkFromSource to use either
DataGeneratorSource or simplified Source V2
-Added rate limiting in DataGeneratorSource where applicable to allow
watermarks to be emitted
## Verifying this change
Existing tests already cover the migrated logic:
-TimestampITCase: All tests were adapted to use Source V2
Test coverage includes:
-testWatermarkPropagation, testTimestampHandling, testDisabledTimestamps
-Tests involving auto watermark interval and custom watermark generators
-Final watermark emission and out-of-order timestamp handling
All tests pass without behavioral changes.
## 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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