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https://issues.apache.org/jira/browse/BOOKKEEPER-168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13215676#comment-13215676
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Ivan Kelly commented on BOOKKEEPER-168:
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Ah, you're right about the test case. I was counting wrong in my head.

{quote}
in a proxy-style server using hedwig client, it usually initializes a client 
instance to handle/proxy the subscriptions. if we want to support different 
application/subscription having different size-bound, we have to construct 
multiple client instances, which make it complex.
{quote}
I'll have a look at how to do this. It shouldn't be very complex, though I'll 
have to do for both C++ and java.
                
> Message bounding on subscriptions
> ---------------------------------
>
>                 Key: BOOKKEEPER-168
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-168
>             Project: Bookkeeper
>          Issue Type: New Feature
>            Reporter: Ivan Kelly
>            Assignee: Ivan Kelly
>             Fix For: 4.1.0
>
>         Attachments: BOOKKEEPER-168.diff, BOOKKEEPER-168.diff
>
>
> In hedwig, messages for a subscription will queue up forever if the 
> subscriber is offline. In some usecases, this is undesirable, as it will 
> eventually mean resource exhaustion. In this JIRA we propose an optional 
> change to the subscription contract, which allows the user to set a bound on 
> the number of messages which will be queued for its subscription while it is 
> offline.

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