XComp opened a new pull request, #24245:
URL: https://github.com/apache/flink/pull/24245
## What is the purpose of the change
This is the fix of FLINK-34007 applied to Flink 1.18. In the end, it's a
straight-forward backport including the upgrade to fabric8io:kubernetes-client
v6.9.0. See FLINK-34333 for further details on the discussion whether the
dependency upgrade is suitable.
## Brief change log
* Makes `KubernetesLeaderElector` re-instantiate the fabric8io LeaderElector
at the beginning of a new leadership lifecycle.
* Upgrades `fabric8io:kubernetes-client` from `v6.6.2` to `v6.9.0` in order
to include https://github.com/fabric8io/kubernetes-client/issues/5463
## Verifying this change
* Extends `KubernetesLeaderElectorITCase` to include a test case for the
scenario that was revealed in FLINK-34007 and a check that verifies the
leadership lost event being sent when stopping the `KubernetesLeaderElector`
## 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: 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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