[QPID-2482] Topic Exchange can duplicate messages.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.7
• Component/s: C++ Broker

Environment

Linux

• Assignee: Ken Giusti
• Reporter: Ken Giusti
• Created: 06/Apr/10 14:40
• Updated: 29/Jul/13 18:54
• Resolved: 08/Apr/10 13:42

Description

As per Gordon's description:

If a given queue is bound to a topic exchange with multiple bindings, a message sent to that exchange will result in a copy being enqueued for each binding that matches. This is incorrect - each message should be enqueued once if there is any binding to the queue that matches it.

Steps to Reproduce:
1. create queue
2. bind it to amq.topic with two distinct bindings (e.g. red.* and *.herring)
3. send amq.topic a message whose routing key matches both patterns (e.g. "red.herring")
4. check the queue

Actual results:

The message is enqueued on the queue twice.

Expected results:

The message should only be enqueued on the queue once.