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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