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| solomon_13000 |
 Posted: Sun Sep 14, 2008 12:06 am Post subject: Messages |
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Master
Joined: 13 Jun 2008
Posts: 284
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There is 3 queue manages define in a cluster. QM1, QM2 and QM3. Now any of this queue manager can send a message to a queue manager sitting outside a cluster. For example:
QM1 (cluster) to QM2 (outside the cluster) to QM3 (outside the cluster) to QM4 (outside the cluster).
QM2 (cluster) to QM2 (outside the cluster) to QM3 (outside the cluster) to QM4 (outside the cluster).
QM3 (cluster) to QM2 (outside the cluster) to QM3 (outside the cluster) to QM4 (outside the cluster).
Now once the message is processed upon arriving at QM4 it will return a reply message back to either QM1 (cluster), QM2 (cluster), QM3 (cluster) . Suppose if the cluster failed, now the messages will be trapped at QM2 (outside the cluster). Now once the cluster is restored, how does the QM2 (outside the cluster) know to which queue manager in the cluster it should send the reply message?. Is this problem know as a bounce off messages?.
Regards,
Eugene |
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| PeterPotkay |
| Posted: Sun Sep 14, 2008 3:50 am Post subject: Re: Messages |
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Poobah
Joined: 15 May 2001
Posts: 7722
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| solomon_13000 wrote: |
| Suppose if the cluster failed, now the messages will be trapped at QM2 (outside the cluster). Now once the cluster is restored, how does the QM2 (outside the cluster) know to which queue manager in the cluster it should send the reply message? |
Clusters don't fail. Something goes wrong with a particular component. Hardware failure, software bug, or 99,999 times out of 10,0000 with MQ clusters, operator error. Exactly what that problem is determines how your message is routed during the problem and once its resolved.
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Is this problem know as a bounce off messages?.
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I have never heard of that term.
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Peter Potkay
Keep Calm and MQ On |
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| fjb_saper |
| Posted: Sun Sep 14, 2008 10:47 am Post subject: Re: Messages |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| solomon_13000 wrote: |
There is 3 queue manages define in a cluster. QM1, QM2 and QM3. Now any of this queue manager can send a message to a queue manager sitting outside a cluster. For example:
QM1 (cluster) to QM2 (outside the cluster) to QM3 (outside the cluster) to QM4 (outside the cluster).
QM2 (cluster) to QM2 (outside the cluster) to QM3 (outside the cluster) to QM4 (outside the cluster).
QM3 (cluster) to QM2 (outside the cluster) to QM3 (outside the cluster) to QM4 (outside the cluster).
Now once the message is processed upon arriving at QM4 it will return a reply message back to either QM1 (cluster), QM2 (cluster), QM3 (cluster) . Suppose if the cluster failed, now the messages will be trapped at QM2 (outside the cluster). Now once the cluster is restored, how does the QM2 (outside the cluster) know to which queue manager in the cluster it should send the reply message?. Is this problem know as a bounce off messages?.
Regards,
Eugene |
Bad definition of your problem. By your own admission QM1,QM2,QM3 are in the cluster... So how can you have any of your 3 scenarios when clearly only QM4 is outside the cluster? Or does your "outside the cluster" just mean "non clustered queue"?
Clarify and reformulate... 
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| sami.stormrage |
| Posted: Sun Sep 14, 2008 11:35 am Post subject: |
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Disciple
Joined: 25 Jun 2008
Posts: 186
Location: Bangalore/Singapore
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Well, this looks like a confugration that ur attempting with Qmgr alias and multihops, Then in that case ur message will be on one the transmission Q's in an intermediate location.
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