failover causes duplicate messages
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Key: AMQNET-243
URL: https://issues.apache.org/activemq/browse/AMQNET-243
Project: ActiveMQ .Net
Issue Type: Bug
Components: NMS
Affects Versions: 1.1.0
Reporter: Mark Gellings
Assignee: Jim Gomes
Reference https://issues.apache.org/activemq/browse/AMQ-2627 for specifics on
problem.
Attached to that issue is a zip file which is password protected with password
"fridaytest".
We're using ActiveMQ v5.2, jdbc master/slave MSSQL 2008. Attached is an NMS
v1.2 RC4 consumer with a transacted session as well as activemq.xml.
To replicate:
1) Work through the console prompts and produce 50 msgs.
2) Restart console and start consuming those 50 msgs.
3) In the middle of the consumer processing, restart broker
4) The last message consumer was processing will be resent and not marked as
redelivered. (this is the idempotent msg problem. Ex. - instead of $500 getting
deposited into your account, $1000 does)
5) Then NMS blows up which seems like a different problem?
>From what I understand this shouldn't be the case if you use a transacted
>session, however the attached console app can prove it is a problem.
Bottomline--I thought this was why the camel idempotent consumer pattern [1]
existed which can be leveraged by java clients.
[1] http://fusesource.com/docs/router/1.6/eip/MsgEnd-Idempotent.html
Regards,
Mark
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