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From "Maximilian Michels (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-2821) Change Akka configuration to allow accessing actors from different URLs
Date Thu, 08 Dec 2016 10:11:58 GMT

    [ https://issues.apache.org/jira/browse/FLINK-2821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15731744#comment-15731744
] 

Maximilian Michels commented on FLINK-2821:
-------------------------------------------

Thanks for testing again! I've already fixed the issue you mentioned in the latest version
which I will push to the PR later today. 

The new version never touches hostnames but tries to resolve IP addresses if it finds one
to make sure that different IP formats, e.g. IPv6 are consistently resolved.

> 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
>
> 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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