HuangZhenQiu opened a new pull request, #28002:
URL: https://github.com/apache/flink/pull/28002
## What is the purpose of the change
Currently, the job creation event happens in client side, and any follow up
status change events propagation happen in DefaultExecutionGraph. In this case,
there are two instances of the same job listener created. We probably may
consider moving the job creation event to dispatcher. With the change, a single
job listener instance for each type in JVM needs to be created. Then, states
within the instance will be shared within the whole job lifecycle.
## Brief change log
- Move JobStatusChangedListener creation for Job Creation Event to
Dispatcher
- Change JobStatusChangedListener to singleton for each type in
JobStatusChangedListenerUtils
- Add test cases for JobStatusChangedListenerUtils.
## Verifying this change
This change added tests and can be verified as follows:
- JobStatusChangedListenerUtilsTest is added to test
JobStatusChangedListener creation
## 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, 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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