Github user wangzhijiang999 commented on the issue: https://github.com/apache/flink/pull/2400 @mxm , could we remove the parameter "taskManagerHostname" from "startTaskManagerComponentsAndActor" method, I think the hostname can be got by {{TaskExecutor}} itself, no need to pass it from outsider world. To do so, it is more easier to construct {{TaskExecutor}} by factory method "startTaskManagerComponentsAndActor(configuration, resourceID,rpcService,haServices,localTaskManagerCommunication)" when design UT for testing.
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