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https://issues.apache.org/jira/browse/DISPATCH-882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16262439#comment-16262439
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Kai Hudalla commented on DISPATCH-882:
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My expectation would be that the router simply starts to discard messages once
it runs out of credits from the (slow) receivers.
Am I right in assuming, though, that if the receivers use unsettled deliveries
as well, then the sender will be blocked (or at least not replenished with
additional credit), once all credit from the receivers has been used up?
> router buffers messages for slow presettled receiver
> ----------------------------------------------------
>
> Key: DISPATCH-882
> URL: https://issues.apache.org/jira/browse/DISPATCH-882
> Project: Qpid Dispatch
> Issue Type: Bug
> Reporter: Gordon Sim
> Assignee: Ken Giusti
> Fix For: 1.1.0
>
>
> For an anycast address with incoming transfers unsettled and outgoing
> transfers pre-settled, if the receiver can't keep up with the sender, the
> router appears to buffer a growing number of deliveries.
> The link stats for the receiver, which is receiving pre-settled, are shown as
> accepted and unsettled (with a small number of undelivered) with presettled
> count remaining at zero and the unsettled count growing. qpid-stat -m shows
> growth in buffer and message content related types.
> It looks like there is no limit to the amount of messages the router will try
> to buffer in this case(?) though I did not push it all the way to failure.
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