Duplicate messages with durable subscribers and perstitent messages
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Key: AMQ-1389
URL: https://issues.apache.org/activemq/browse/AMQ-1389
Project: ActiveMQ
Issue Type: Bug
Components: Broker
Affects Versions: 5.0.0
Environment: linux, persistent="true" in broker config
Reporter: Pieter
I have two consumers, having a durable subscription on a topic. If I send a
persistent message to the topic, everything works ok. However, when I restart
the consumers, one of them receives the message again after connecting (it
seems to be the one that ACK's the message as second). Reconnecting again
doesn't give any problems, the messages aren't redelivered.
This problem does not happen when only a single consumer is connected. Also, it
doesn't appear if the persistent message is sent before the consumers are
connected.
Steps to reproduce:
Start two consumers with a durable topic subscription (in the example/
directory):
$ ant consumer -Ddurable=true -DclientId=test1 -Dtopic=true
$ ant consumer -Ddurable=true -DclientId=test2 -Dtopic=true
Send persistent messages to this topic:
$ ant producer -Ddurable=true -Dtopic=true
Kill consumers and start them again. One of them willl receive each message
again.
This also happens if I use the STOMP protocol. In ActiveMQ 4.1.1 things work as
expected, but in snapshots (I tried 4.2 and 5.0), the behaviour is as above.
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