tillrohrmann opened a new pull request #9813: [FLINK-14287] Decouple leader 
address from LeaderContender 
URL: https://github.com/apache/flink/pull/9813
 
 
   ## What is the purpose of the change
   
   This PR is based on #9812.
   
   Change LeaderElectionService#confirmLeadership to accept leader address so 
that
   the LeaderContender does not need to know the address of the potential leader
   before gaining leadership. This allows to decouple the leader election from 
the
   actual leader component.
   
   ## Verifying this change
   
   This change is already covered by existing tests, such as *(please describe 
tests)*.
   
   ## 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, Yarn/Mesos, ZooKeeper: (no)
     - 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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