StephanEwen opened a new pull request #15677:
URL: https://github.com/apache/flink/pull/15677
## What is the purpose of the change
This adds a 'checkpointID' to the method `SplitEnumerator.snapshotState()`,
so that connectors against checkpoint-aware systems get the information what
checkpoint the snapshot is for.
**This is an API breaking change in the SplitEnumerator class**
The class is `@PublicEvolving`, introduced in 1.12 - I opted for doing this
change for 1.13 because this was the first released version (labaled BETA in
the feature radar) and we avoid instant tech debt this way.
Starting from 1.13 or 1.14, we should mark this API at `@Public` and thus
stable.
## Verifying this change
This change is a trivial rework / code cleanup without any test coverage.
## 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)`: **yes**
- 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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