XComp opened a new pull request, #22868:
URL: https://github.com/apache/flink/pull/22868

   ## What is the purpose of the change
   
   `AbstractZooKeeperHaServices` is obsolete with the legacy ZK driver being 
gone. This PR help reducing the diff of FLINK-26522 PRs a bit.
   
   ## Brief change log
   
   * Moves the `ZooKeeperMultipleComponentLeaderElectionHaServices` 
functionality into `AbstractZooKeeperHaServices`
   * Deletes `ZooKeeperMultipleComponentLeaderElectionHaServices`
   * Renames `AbstractZooKeeperHaServices` into 
`ZooKeeperMultipleComponentLeaderElectionHaServices`
   
   ## Verifying this change
   
   * Any existing test should still pass
   
   ## 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? yes
     - If yes, how is the feature documented? not applicable


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