zhangjing created FLINK-4516:
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Summary: ResourceManager leadership election
Key: FLINK-4516
URL: https://issues.apache.org/jira/browse/FLINK-4516
Project: Flink
Issue Type: Sub-task
Components: Cluster Management
Reporter: zhangjing
1. When a resourceManager is started, it starts the leadership election service
first and take part in contending for leadership
2. Every resourceManager contains a ResourceManagerLeaderContender, when it is
granted leadership, it will start SlotManager and other main components. when
it is revoked leadership, it will stop all its components and clear everything.
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