gaoyunhaii opened a new pull request #14818:
URL: https://github.com/apache/flink/pull/14818
## What is the purpose of the change
This PR tries to re-trigger the descendent tasks if needed when some tasks
finished before get triggered successfully.
## Brief change log
- 8c90e675f53a6fd1ae52cf36350b55416470c7b3 refactors the
`CheckpointCoordinator` to let `CheckpointCoordinator` decide the thread used
to deal with tasks' report. This ensures the `CheckpointCoordinator` has an
opportunity to record the in-process reports.
- 127c825b086444687af34685da04e72e9fd6bc2c implements the re-triggering
logic.
## Verifying this change
This change added tests and can be verified via added unit tests
## 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/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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