| |
|
RSS Feed - WebSphere MQ Support
|
RSS Feed - Message Broker Support
|
  |
|
| A doubt about cluster command queue |
« View previous topic :: View next topic » |
| Author |
Message
|
| ayanc |
 Posted: Wed Apr 05, 2006 9:39 pm Post subject: A doubt about cluster command queue |
 |
|
Voyager
Joined: 15 Nov 2004
Posts: 88
|
Hi,
I have a doubt about the cluster command queue. As per the manual the use of SYSTEM.CLUSTER.COMMAND.QUEUE is described as:
| Quote: |
Each queue manager in a cluster has a local queue called
SYSTEM.CLUSTER.COMMAND.QUEUE. This queue is used to carry
messages to the full repository. The queue manager uses this queue to send any new or changed information about itself to the full repository queue manager and to send any requests for information about other queue managers. This queue is normally empty.
|
My confusion is how can this queue be used to "send" any message because it is a local queue? The messages are actually sent by the SYSTEM.CLUSTER.TRANSMIT.QUEUE.
As far as I know messages meant for full repository queue may have a certain format that needs to be generated by the command server manning the command queue. So, command queue may act as an intermediary between the Command Server and the transmit queue.
Is my understanding correct .... or am I missing out something? |
|
| Back to top |
|
 |
| wschutz |
| Posted: Thu Apr 06, 2006 2:14 am Post subject: |
|
|
Jedi Knight
Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
|
Yeah, the doc isn't exactly clear on this.
As an example....
if you have two qmgrs, say QMP and QMF, and QMP is a partial repository and QMF is a full respository, then when you issue a command to QMP to define a queue which is in the cluster, what QMP does is send a "define" command to the command queue SYSTEM.CLUSTER.COMMAND.QUEUE at QMF via the SYSTEM.CLUSTER.TRANSMIT.QUEUE on QMP.
QMP "knows" to send the message to QMF because you defined a channel with the same cluster name, of type CLUSSDR which "points" to QMF.
Does that make sense?
_________________
-wayne |
|
| Back to top |
|
|
| ayanc |
| Posted: Thu Apr 06, 2006 2:33 am Post subject: |
|
|
Voyager
Joined: 15 Nov 2004
Posts: 88
|
Hi Wayne,
Thanks for your response. What you said is true and it does make sense. |
|
| Back to top |
|
|
|
|
|
| |
|
Page 1 of 1 |
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
|
|
|
