tillrohrmann opened a new pull request #11552: [FLINK-16836] Clear 
rpcConnection field in JobManagerLeaderListener when target loses leadership
URL: https://github.com/apache/flink/pull/11552
 
 
   ## What is the purpose of the change
   
   Clearing the rpcConnection field in the JobManagerLeaderListener when target 
loses leadership
   prevents that we try to reconnect to the target in case 
JobLeaderService.reconnect(JobID) is
   called.
   
   ## Verifying this change
   
   Added `JobLeaderServiceTest#doesNotReconnectAfterTargetLostLeadership`
   
   ## 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: (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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