rickyspeak opened a new pull request #15393:
URL: https://github.com/apache/flink/pull/15393
## What is the purpose of the change
This removes a race condition in which the ZooKeeperRunningJobsRegistry
leaves Zookeeper with a znode in the `running_job_registry` with an empty
value, resulting in the Job Manager failing on subsequent restart due to a test
in ZooKeeperRunningJobsRegistry#getJobSchedulingStatus throwing an exception on
the empty value.
## Brief change log
ZooKeeperRunningJobsRegistry no longer uses `newNamespaceAwareEnsurePath` to
ensure the path exists.
## Verifying this change
This change is already covered by existing tests.
`ZooKeeperRegistryTest#testZooKeeperRegistry` verifies that functionality is
unchanged.
## 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: (**yes**)
- 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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