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From "Teemu Torma (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQCPP-256) Transaction has not been started exceptions on the broker with parallel transacted sessions
Date Tue, 21 Jul 2009 16:58:34 GMT
Transaction has not been started exceptions on the broker with parallel transacted sessions
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                 Key: AMQCPP-256
                 URL: https://issues.apache.org/activemq/browse/AMQCPP-256
             Project: ActiveMQ C++ Client
          Issue Type: Bug
    Affects Versions: 3.0
         Environment: Ubuntu Jaunty 9.04
            Reporter: Teemu Torma
            Assignee: Timothy Bish
            Priority: Critical


When using parallel transacted sessions and consumers to same queue each sharing the same
connection, the messages are delivered but the broker 5.2 gets exceptions

javax.jms.JMSException: Transaction 'TX:de411476-d65d-fff7-1e84-be7c9abd80b5:6' has not been
started.

and some messages are left on the broker even though they were delivered.

The issue seems to be related to multi-threading, by protecting each receive/commit with a
lock the error does not happen.  I am sorry I don't have a test program ready, but it should
be easy to reproduce by creating multiple transacted session threads with prefetchSize=1 and
consuming messages, commiting after each message.  I have seen this happen both with consumers
and listeners.

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