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From "Gary Tully (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMQ-3694) Blocked/Slow advisory consumers in duplex network connector, eventually breaks request/reply with temps
Date Wed, 01 Feb 2012 15:18:58 GMT
Blocked/Slow advisory consumers in duplex network connector, eventually breaks request/reply
with temps
-------------------------------------------------------------------------------------------------------

                 Key: AMQ-3694
                 URL: https://issues.apache.org/jira/browse/AMQ-3694
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker, Connector
    Affects Versions: 5.5.0
            Reporter: Gary Tully
            Assignee: Gary Tully
             Fix For: 5.6.0


In duplex network connectors, the destinations and temp advisories are not acked. This leads
to a buildup of advisory messages on the bridging broker and missing advisories on the target.
In the main, when the numbers of destinations is static and there are no temp queues per roundtrip
this goes unnoticed.
If request/reply is used over a network with a temp queue per request (a bit of an anti pattern,
they are typically per connection), the problem is quickly visible with the default prefetch.
Very quickly advisories for temp queue creation and producer consumers get blocked and communication
comes to a halt. 
The root cause is that advisories are not acked in the duplex case so we can only get 750
(.75*prefetch) of them before we block.

symptom{code}javax.jms.JMSException: The destination temp-queue://ID:xxx-xxx-0:7:17 does not
exist.
{code} or replies do not get propagated back because the consumer advisory is blocked.

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