[jira] [Created] (FLINK-4451) Throw exception when remote connection cannot be resolved

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-4451:
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             Summary: Throw exception when remote connection cannot be resolved
                 Key: FLINK-4451
                 URL: https://issues.apache.org/jira/browse/FLINK-4451
             Project: Flink
          Issue Type: Sub-task
            Reporter: Till Rohrmann
            Assignee: Till Rohrmann


The {{RpcService}} implementation should throw an exception (returned in the future) if {{RpcService.connect(address, type)}} cannot connect to the remote {{RpcEndpoint}}.

At the moment the {{AkkaRpcService}} does not check that the {{IdentifyActor}} message contains a valid {{ActorRef}} and throws due to that a {{NullPointerException}}.



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