[jira] [Created] (FLINK-19542) Implement LeaderElectionService and LeaderRetrievalService based on Kubernetes API

[Shang Yuanchun (Jira)]

Yang Wang created FLINK-19542:
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             Summary: Implement LeaderElectionService and LeaderRetrievalService based on Kubernetes API
                 Key: FLINK-19542
                 URL: https://issues.apache.org/jira/browse/FLINK-19542
             Project: Flink
          Issue Type: Sub-task
          Components: Deployment / Kubernetes, Runtime / Coordination
            Reporter: Yang Wang
             Fix For: 1.12.0


* *_LeaderElectionService_*
 * Contends for the leadership of a service in JobManager. There are four components in a JobManager instance that use LeaderElectionService: ResourceManager, Dispatcher, JobManager, RestEndpoint(aka WebMonitor). 
 * Once the leader election is finished, the active leader addresses will be stored in the ConfigMap so that other components could retrieve successfully. 


 * *_LeaderRetrievalService_*
 * Used by Client to get the RestEndpoint address for the job submission.
 * Used by JobManager to get the ResourceManager address for registration.
 * Used by TaskManagers to retrieve addresses of the corresponding LeaderElectionService(e.g. JobManager address, ResourceManager address) for registration and offering slots



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