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https://issues.apache.org/jira/browse/FLINK-2821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15571823#comment-15571823
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Stephan Ewen commented on FLINK-2821:
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I agree, it would be good to resolve that. It seems, though, that we are
literally blocked by Akka on this. There seem to be these choices:
- Abandon Java 7 (seems not a good idea at this point)
- Abandon Akka (may be possible in future versions of Flink, after flip-6 and
the new RPC abstraction is in)
- Find a way to build a custom version of Akka 2.4 compatible with Java 7 (I
know Robert tried, but it is quite hard)
Any suggestions and feedback more than welcome!
> Change Akka configuration to allow accessing actors from different URLs
> -----------------------------------------------------------------------
>
> Key: FLINK-2821
> URL: https://issues.apache.org/jira/browse/FLINK-2821
> Project: Flink
> Issue Type: Bug
> Components: Distributed Coordination
> Reporter: Robert Metzger
>
> Akka expects the actor's URL to be exactly matching.
> As pointed out here, cases where users were complaining about this:
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Error-trying-to-access-JM-through-proxy-td3018.html
> - Proxy routing (as described here, send to the proxy URL, receiver
> recognizes only original URL)
> - Using hostname / IP interchangeably does not work (we solved this by
> always putting IP addresses into URLs, never hostnames)
> - Binding to multiple interfaces (any local 0.0.0.0) does not work. Still
> no solution to that (but seems not too much of a restriction)
> I am aware that this is not possible due to Akka, so it is actually not a
> Flink bug. But I think we should track the resolution of the issue here
> anyways because its affecting our user's satisfaction.
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