[jira] [Created] (FLINK-1559) Normalize all Akka URLs to use IP addresses, not hostnames

["Stephan Ewen (JIRA)" <ji...@apache.org>]

Stephan Ewen created FLINK-1559:
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             Summary: Normalize all Akka URLs to use IP addresses, not hostnames
                 Key: FLINK-1559
                 URL: https://issues.apache.org/jira/browse/FLINK-1559
             Project: Flink
          Issue Type: Bug
          Components: Distributed Runtime
    Affects Versions: 0.9
            Reporter: Stephan Ewen
            Assignee: Stephan Ewen
             Fix For: 0.9


Akka has the nasty property that it does not use IP addresses and hostnames interchangeably. 

Example: If the JobManager is started at {{akka:tcp//flink@localhost:1234/user/JOBMANAGER}} and a job client actor tries to send messages to {{akka:tcp//flink@127.0.0.1:1234/user/JOBMANAGER}}, the job manager actor system will receive the messages, but throw them away, because they are not destined for the actor system.

I am not sure whether this is a bug or a feature in akka, but we need to deal with it. To be on the safe side, I suggest to build all akka URLs with ip addresses. We can still use host names in our logic (connection infos, local assignments, etc)




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