zjureel opened a new pull request #18303:
URL: https://github.com/apache/flink/pull/18303
## What is the purpose of the change
This PR adds a scheduled thread pool which will used to hold the periodic
tasks and send them to akka with gateway when they should be executed. The
thread pool will be shutdown when the RpcEndpoint is stopped.
## Brief change log
-* Add a scheduled thread pool to hold the periodic tasks and send them to
akka with gateway when they should be executed
-* Add closeable resource registry in RpcEndpoint and close all the
resources which are registered in it.
-* The thread pool in RpcEndpoint will register itself to the closeable
resource registry
## Verifying this change
This change added tests and can be verified as follows:
-* Add PeriodicTaskScheduledExecutorTest to test schedule runnable and
callable task in the thread pool
-* Add validation in JobMasterTest to check if the thread pool is closed
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (yes / no) no
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (yes / no) no
- The serializers: (yes / no / don't know) no
- The runtime per-record code paths (performance sensitive): (yes / no /
don't know) no
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (yes / no / don't know)
no
- The S3 file system connector: (yes / no / don't know) no
## Documentation
- Does this pull request introduce a new feature? (yes / no) no
- If yes, how is the feature documented? (not applicable / docs / JavaDocs
/ not documented)
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