[jira] [Created] (FLINK-4400) Leadership Election among JobManagers

[Shang Yuanchun (Jira)]

Xiaogang Shi created FLINK-4400:
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             Summary: Leadership Election among JobManagers
                 Key: FLINK-4400
                 URL: https://issues.apache.org/jira/browse/FLINK-4400
             Project: Flink
          Issue Type: Sub-task
          Components: Cluster Management
            Reporter: Xiaogang Shi
            Assignee: Xiaogang Shi


* All JobMasters are LeaderContenders
* Once a JobMaster is initialized, the very first thing it has to do is to start the leadership election service and contend for the leadership.
* A JobMaster starts to perform its functionality when it grants the leadership.
* If a JobMaster’s leadership is revoked, it will cancel all performed execution and release all acquired resources.




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