[jira] [Created] (FLINK-12497) Refactor the start method of ConnectionManager

[Shang Yuanchun (Jira)]

zhijiang created FLINK-12497:
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             Summary: Refactor the start method of ConnectionManager
                 Key: FLINK-12497
                 URL: https://issues.apache.org/jira/browse/FLINK-12497
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Network
            Reporter: zhijiang
            Assignee: zhijiang


In current `ConnectionManager#start(ResultPartitionProvider, TaskEventDispatcher)`, the parameters in start are only reasonable for `NettyConnectionManager` implementation, reductant for `LocalConnectionManager`. 

We could put these parameters in the constructor of `NettyConnectionManager`, then `ConnectionManager#start()` would be more cleaner for both implementations. And it also bring benefits for calling start in `NetworkEnvironment` which does not need to maintain private `TaskEventDispatcher`.



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