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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » Aggregation not parallel

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Terence
PostPosted: Mon Aug 08, 2011 2:20 am    Post subject: Reply with quote

Novice

Joined: 08 Aug 2011
Posts: 12

Hi,

I met a strange problem.
My message flow is dipicted below:
1)There are 2 branches after node 'Aggregate control'.
2) Either branch will call a common subflow.
3. There is a java compute node in the common subflow, the java compute node will print out the thread id.
4) The 'additional instances' of all flows are set 3.

From my test,
1) The common subflow from 2 branches is executed in sequence, not in parallel.
2) The thread id may be different when the Aggregate flow is invoked multiple times.
3) The total thread id number is equals to the 'additional instances'.

From my understanding, the aggregate branch should be executed in parallel, Did I miss something? thanks a lot!

Terence
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mqjeff
PostPosted: Mon Aug 08, 2011 7:35 am    Post subject: Reply with quote

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Joined: 25 Jun 2008
Posts: 17447

Terence wrote:
From my understanding, the aggregate branch should be executed in parallel


No.

Aggregate allows you to send messages to MQOutput nodes. These can then be read from MQInput nodes - which will run in parallel with each other - and they can send back requests that will then get picked up as they come in and can be processed "in parallel" until the aggregation is complete.
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Terence
PostPosted: Tue Aug 09, 2011 2:04 am    Post subject: Reply with quote

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Joined: 08 Aug 2011
Posts: 12

mqjeff wrote:

No.

Aggregate allows you to send messages to MQOutput nodes. These can then be read from MQInput nodes - which will run in parallel with each other - and they can send back requests that will then get picked up as they come in and can be processed "in parallel" until the aggregation is complete.


Thank Jeff very much, the MQInput node works for parallel.
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