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| Aggregate node |
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| amigupta1978 |
 Posted: Thu Jan 24, 2002 1:53 pm Post subject: |
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Centurion
Joined: 22 Jan 2002
Posts: 132
Location: India
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Hello,
Can any body provide me the help on using the Aggregate node. I have just read the documentation of the Aggregate node , are there any problems in using this node like say if one or two reply messages doesnot come (what I read is that we can handle using the timout interval), can anyone post his experience and problem that any one has faced using the aggregate node
Thanks in Advance
Amit |
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| zpat |
| Posted: Fri Jan 25, 2002 2:21 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5849
Location: UK
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Here are some tips:
You should set a timeout value in the Aggregate Control node and code your flow logic to deal with incomplete compound messages (timeouts).
You should set the unknown message timeout in the Aggregate Reply node, this gives time for the control message to arrive, which reduces the risk of the problem of getting an unknown message in the event that a reply message arrives before the control message.
It’s best to use a transactional unit of work in your FAN OUT flow, so that either all, or none, of the request messages and the control message are committed. |
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| harkink |
| Posted: Fri Jan 25, 2002 3:19 am Post subject: |
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Newbie
Joined: 02 Jan 2002
Posts: 4
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After reading the manual and example carefully(!), it works perfectly.
I did not use the MQAggLegacy, but included the reply with
MQSI flows: input nodes connected to output nodes in the same flow as
the example. |
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| zpat |
| Posted: Fri Jan 25, 2002 5:05 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5849
Location: UK
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| I don't like the idea of a single flow being used myself. I think it's better to have separate flows for the FAN OUT and FAN IN logic. One reason being that you can suspend the FAN OUT flow while letting outstanding aggregation requests complete in the FAN IN flow during a system closedown sequence. |
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| amigupta1978 |
| Posted: Fri Jan 25, 2002 1:28 pm Post subject: |
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Centurion
Joined: 22 Jan 2002
Posts: 132
Location: India
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| Thnx for all the replies. I will keep all the suggestions in my mind while working on it. More suggestions are always welcome. |
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