pnowojski opened a new pull request #18424:
URL: https://github.com/apache/flink/pull/18424
In order to allow `SourceCoordinators`s from different `Source`s (for
example two different Kafka sources, or Kafka and Kinesis) to align watermarks,
they have to be able to exchange information/aggregate watermarks from those
different Sources. To enable this, we need to provide some CoordinatorStore
concept, that would be a thread safe singleton.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (yes / **no**)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (yes / **no**)
- The serializers: (yes / **no** / don't know)
- The runtime per-record code paths (performance sensitive): (yes / **no**
/ don't know)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (yes / **no** / don't
know)
- The S3 file system connector: (yes / **no** / don't know)
## Documentation
- Does this pull request introduce a new feature? (**yes** / no)
- If yes, how is the feature documented? (not applicable / docs /
**JavaDocs** / not documented)
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