[jira] [Commented] (BOOKKEEPER-261) Let a hedwig-client discover the region of the hedwig-server cluster it is connected to

["Sijie Guo (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BOOKKEEPER-261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13276343#comment-13276343 ] 

Sijie Guo commented on BOOKKEEPER-261:
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If we treat Hedwig as a whole system, the publish/subscribe should just connect to its local region, cross-region functionality would be handled by Hedwig itself. From this side, the client might know which region it connected.

so one quick question, why you need the region for hedwig client? is there any special considerations? 
                
> Let a hedwig-client discover the region of the hedwig-server cluster it is connected to
> ---------------------------------------------------------------------------------------
>
>                 Key: BOOKKEEPER-261
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-261
>             Project: Bookkeeper
>          Issue Type: Improvement
>          Components: hedwig-client
>            Reporter: Aniruddha
>            Priority: Minor
>
> Currently, the client-server protocol doesn't let a Hedwig client discover the region that it is a part of. There are a couple of approaches that I could think of to do this - 1) The client publishes and subscribes to a randomly generated topic-name. It can then set it's region to the srcRegion of the received message. 2) Have a discovery operation akin to the publish/subscribe operations and let the server respond to this with information about itself (region name and any other information it might want to pass on to the client). I personally prefer (2). I could produce a patch if the approach looks good. 

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