XComp opened a new pull request, #22873:
URL: https://github.com/apache/flink/pull/22873
## What is the purpose of the change
This is a cleanup PR that removes unused classes/interfaces/fields and
renames the MultipleComponent*-related classes into a shorter version.
## Brief change log
* Removes obsolete/unused MultipleComponentLeaderElection-related classes
and interfaces
* Deletes old k8s-related classes
* Deletes old zk-related classes/methods/interfaces
* Deletes LeaderElectionDriver- and LeaderElectionEventHandler-related
classes/methods/interfaces
* Renames MultipleComponentLeaderElectionDriver (and its subclasses) into
LeaderElectionDriver
* Renames MultipleComponentLeaderElectionDriverFactory (and its subclasses)
into LeaderElectionDriverFactory
## Verifying this change
* CI succeeds
## 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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