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Posted to dev@qpid.apache.org by "Ted Ross (JIRA)" <ji...@apache.org> on 2018/05/17 17:02:00 UTC
[jira] [Resolved] (DISPATCH-966) Qpid dispatch unstable
inter-router connections
[ https://issues.apache.org/jira/browse/DISPATCH-966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ted Ross resolved DISPATCH-966.
-------------------------------
Resolution: Fixed
This regression occurred when large-message-streaming was introduced. Large, multi-frame messages being delivered to the router agent within Dispatch Router were being blocked.
> Qpid dispatch unstable inter-router connections
> -----------------------------------------------
>
> Key: DISPATCH-966
> URL: https://issues.apache.org/jira/browse/DISPATCH-966
> Project: Qpid Dispatch
> Issue Type: Bug
> Components: Routing Engine
> Affects Versions: 1.0.1
> Reporter: Marcel Meulemans
> Assignee: Ted Ross
> Priority: Blocker
> Fix For: 1.1.0
>
> Attachments: inconsistent-settlement.log, qdrouterd-unsettled-true.log, qdrouterd.conf, qdrouterd.log, router-unsettled-true.dump, router.dump
>
>
> I am running a three node fully connected mesh of dispatch routers with 10000 attached clients and I am seeing some unstable inter-router connections (I am sending around 1000 small, less than 1K, messages per second through the network). The inter-router connections fail every so many seconds with the message:
> {{Connection to router-2:55672 failed: amqp:session:invalid-field sequencing error, expected delivery-id 7, got 6}}
> (the numbers 7 and 6 differ per connection loss)
> In wireshark, using the attached tcpdump capture, I can see that every time before the inter router connection is dropped, therw is a rejected disposition with the message:
> {{Condition: qd:forbidden}}
> {{Description: Deliveries to a multicast address must be pre-settled}}
> The routers are connected as follows:
> * router-0 -> router-1
> * router-0 -> router-2
> * router-1 -> router-2
> The routers are running as a docker container (debian stretch) on google compute engine machines (every router on a separate node).
> Attached are:
> * my qdrouter.conf (from one of the routers)
> * a log snippet from router-0 at debug level from connection drop to connection re-established to connection drop again.
> * a tcpdump capture of the inter-router connection between router-0 and router-1 during which several of the failures occur
> Versions:
> * qpid-dispatch@1.0.1-rc1
> * qpid-proton@0.20.0
>
> [^qdrouterd.log]
> [^qdrouterd.conf]
> [^router.dump]
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