wjc920 opened a new pull request #14906:
URL: https://github.com/apache/flink/pull/14906
## What is the purpose of the change
In some cases we don't have non-daemon thread remaining which causes the JVM
to terminate before all tasks have been completed.
To solve this problem, my fix is to block the main thread so that it exits
after all tasks in the JVM are completed.
## Brief change log
- Change the ClusterEntrypoint.runClusterEntrypoint to wait on the result
of clusterEntrypoint.getTerminationFuture().get() and do the System.exit
outside of the future callback
## Verifying this change
This change is already covered by existing tests.
## 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/Mesos, 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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