Messages in Broker cluster

> Hi,

> My question is, if a broker in cluster setup fails,

> do the other brokers know about the messages sitting

> on this failed broker?

> If so can one of the other brokers send them out to

> relevant consumers?

> I would very much appreciate your reply.

>

In the current release, a cluster allows scaling of connections

and availability of service but does not support high availablity

of message data. This means that connections can fail over

to a new broker and continue to send or receive messages,

but the messages stored on a down broker (aka the broker

that the producer was connected to) will remain unavailable

until either:

* the broker restarts

* a new broker is started which points to the same store

If you need the message data to be highly available, we

do support that functionality through SunCluster on solaris.

(sun cluster handles storing the data on a highly available

file store and automatically starting a new broker to take over

for a down broker)

We are also currently working on adding HA functionality to

MQ so that we can provide this functionality in a future

release

lk_schneider at 2007-7-3 15:07:43 >