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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » Filter Node stops routing messages until flow redeployed

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jrsetters
PostPosted: Tue Apr 03, 2012 4:04 am    Post subject: Filter Node stops routing messages until flow redeployed Reply with quote

Acolyte

Joined: 24 Aug 2011
Posts: 72
Location: Cincinnati, OH

I ran into this with a test flow and am trying to determine how I need to address it before production. I have a very simple Filter Node with a True/False condition evaluating a field in my message. If the TRUE condition is met, I move the message to three destination topics. If the FALSE condition is met, I move it to another.

The flow worked as expected for several weeks of testing before my users of one of the external systems began to complain that they did not see messages. I checked the inbound message contents and determined that they should have gone to the outbound system in question. I placed the flow into a Debug state and re-sent the messages. I watched it step through the eSQL in the Filter Node and distribute to two of the three destinations from the TRUE out node, but never the third. I deleted the connection between the TRUE node and the third topic and re created it. When I redeployed it worked again without issue.

I am not certain how to troubleshoot this any further since I did not have any active traces. But this is the sort of issue that would be frightening in production.

Has anyone experienced this before?

I am running 7.0.0.2 of the Toolkit and MQSI.
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Esa
PostPosted: Tue Apr 03, 2012 4:27 am    Post subject: Re: Filter Node stops routing messages until flow redeployed Reply with quote

Grand Master

Joined: 22 May 2008
Posts: 1387
Location: Finland

jrsetters wrote:
If the TRUE condition is met, I move the message to three destination topics.


Maybe a publish/subscribe issue?
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Vitor
PostPosted: Tue Apr 03, 2012 4:43 am    Post subject: Re: Filter Node stops routing messages until flow redeployed Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

jrsetters wrote:
I placed the flow into a Debug state and re-sent the messages. I watched it step through the eSQL in the Filter Node and distribute to two of the three destinations from the TRUE out node, but never the third.


This is exactly the kind of situation where running a user trace scores. The debugger has shown that the flow didn't distribute the 3rd copy; a user trace would show you what stopped it distributing / what reasoning it applied to decide that it didn't need to distribute it / that it did in fact distribute it and there's a downstream problem the debugger can't see.
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Esa
PostPosted: Tue Apr 03, 2012 5:05 am    Post subject: Re: Filter Node stops routing messages until flow redeployed Reply with quote

Grand Master

Joined: 22 May 2008
Posts: 1387
Location: Finland

jrsetters wrote:
If the TRUE condition is met, I move the message to three destination topics. If the FALSE condition is met, I move it to another.


Not commenting on what might be the actual cause of the problem, but publishing the message on three topics sounds like an upside down idea of publish/subscribe...
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