liurenjie1024 opened a new pull request #6451: [FLINK-9936] Resource manager connect to mesos after leadership granted. . URL: https://github.com/apache/flink/pull/6451 ## What is the purpose of the change This PR fixes a bug in mesos resource manager which makes it unable to connect to mesos after failover. ## Brief change log - Add **onLeadershipGranted** callback in resource manager. - Add **onLeadershipRevoked** callback in resource manager. ## Verifying this change This change added tests and can be verified as follows: - Manually verified the change by running a cluster on mesos, a stateful streaming program, and killing one JobManager and two TaskManagers during the execution, verifying that recovery happens correctly. ## 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: yes - The S3 file system connector: no ## Documentation - Does this pull request introduce a new feature? no
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