dawidwys opened a new pull request #17278:
URL: https://github.com/apache/flink/pull/17278
## What is the purpose of the change
We want to have a way to trigger a checkpoint at a well defined point in
time. The feature is intended to be used purely in tests and benchmarks
## Brief change log
- 3ac77bd - changes the `MockSourceReader` so that it can wait for the
initial splits. Without the change it could've finished before any splits were
assigned to it, even though there were `AddSplitsEvent(s)` "on the wire"
- e7af45a - exposes an already available method
`CheckpointCoordinator#triggerCheckpoint(boolean periodic)` through REST APIs
of (Dispatcher/JobManager/...)
## Verifying this change
Added tests in `ManualCheckpointITCase`
## 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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