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From "Timothy Bish (JIRA)" <>
Subject [jira] [Commented] (AMQ-5661) AMQP: Honor receiver flow as the true prefetch value on a link.
Date Fri, 13 Mar 2015 22:15:38 GMT


Timothy Bish commented on AMQ-5661:

Root cause for this related issue.

> AMQP: Honor receiver flow as the true prefetch value on a link.
> ---------------------------------------------------------------
>                 Key: AMQ-5661
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Sub-task
>          Components: AMQP
>    Affects Versions: 5.11.0, 5.11.1
>            Reporter: Timothy Bish
>            Assignee: Timothy Bish
>             Fix For: 5.12.0
> We currently don't honor the flow values sent from a receiver to indicate how many messages
our sender can produce (prefetch) and always maintain a fixed value based either on a transport
configuration option or the first non-zero flow.  This is however not in keeping with how
the credit model is expected to work in AMQP and leads to some issues with the brokers sender
accepting messages and buffering them until the receiver sends a flow thereby preventing those
messages from being dispatched to another receiver subscribed to the same destination.  
> We need to honor the link credit and only dispatch when the receiver indicates it is
willing to take messages by sending more link credit.  

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