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From "Holly Edelson (JIRA)" <>
Subject [jira] Commented: (AMQ-1657) Bad Things Happen when 2 brokers in Network of Brokers have same name
Date Thu, 19 Nov 2009 21:39:53 GMT


Holly Edelson commented on AMQ-1657:

The documentation explicitly does state that a configuration of multiple brokers, which are
aware of each other, must be uniquely named. 
It is very easy to do this, dynamically or hard-coded, so I don't know whether new handling
is merited here although I could easily argue that elegant or helpful handling is not a bad

> Bad Things Happen when 2 brokers in Network of Brokers have same name
> ---------------------------------------------------------------------
>                 Key: AMQ-1657
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Improvement
>          Components: Broker
>    Affects Versions: 4.1.1
>            Reporter: Aaron Mulder
>             Fix For: 5.4.0
> If you configure a Network of Brokers with 2 brokers, and in the config file, both have
the same broker name (and same network connection names), then there seem to be some pretty
unpleasant effects.  At a minimum, lots of startup errors and dropped connections between
the two brokers due to errors in DemandForwardingBridge like FirstBroker is already subscribed
to temporary topic foo and so on.  I suspect it also causes messages sent to one broker to
not always be forwarded to the other broker, though that might be because the broker connection
is temporarily down due to the errors like mentioned above.  (However, the symptoms may be
hidden depending on your log levels!)
> It would be nice if during startup, if one broker in the network connects to another
and determines that they both have the same name, there would be some sort of catastrophic
error that caused the starting broker to immediately shut down with a useful error message.

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