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https://issues.apache.org/jira/browse/FLINK-2821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15758235#comment-15758235
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Eron Wright commented on FLINK-2821:
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Folks, would there be any issue with canonicalizing the value of
jobmanager.rpc.address, rather than "lower-casing" it which seems hacky.
Canonical hostnames are very important for SSL hostname verification, which
Akka doesn't support but the post-FLIP-6 RPC could.
Early in the discussion it was questioned whether the external address could be
resolved from within the container - [~philipp.bussche] could you clarify? To
be clear, I mean 'resolve' not 'bind'.
Secondly, while this bug addressed the Akka endpoint, there are almost a
half-dozen other endpoints within Flink. Should we fixup all addresses that an
external client would use?
> 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
> Assignee: Maximilian Michels
> Fix For: 1.2.0
>
>
> 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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