Zakelly opened a new pull request, #23364:
URL: https://github.com/apache/flink/pull/23364
## What is the purpose of the change
The message "Warn - received late message for checkpoint" is shown
frequently in the logs, also when a checkpoint was purposefully canceled. In
those case, this message is unhelpful and misleading.
This PR makes it log this only when the checkpoint is actually expired.
Meaning that when receiving the message, we check if we have an expired
checkpoint for that ID. If yes, we log that message, if not, we simply drop the
message.
## Brief change log
- Make ```CheckpointCoordinator``` only remember the expired checkpoints,
and log the last messages of those.
## Verifying this change
This change is already covered by existing tests modified by this PR , such
as ```CheckpointCoordinatorTriggeringTest```.
## 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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