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MQSeries.net Forum Index » IBM MQ API Support » Every other message getting "lost"

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Boomn4x4
PostPosted: Tue Oct 16, 2012 7:01 am    Post subject: Every other message getting "lost" Reply with quote

Disciple

Joined: 28 Nov 2011
Posts: 172

I have a strange problem where in only one instance, every other message seems to be getting lost.

I have an API that puts messages to a clustered queue. On my system, it works fine. However, when I run the application on another developers system, it seems like every other message is getting lost. If I send 4 messages, only 2 show up on the clustered queue. I put one message, nothing shows up. Put the second message, it shows up. I'm checking the MQ_CC of the PUT, and I am getting MQCC_OK.

The part that has me scratching my head is that if I use the same API to put messages to a generic local queue (as opposed to the clustered queue), there are no issues.

Question 1: Any idea what I should be looking at to see why everything works fine on my system. It works fine for a local queue on another system, but doesn't work for a cluster queue on that same system?

Question 2: Where are those seemingly "lost" messages going?


Last edited by Boomn4x4 on Tue Oct 16, 2012 7:04 am; edited 1 time in total
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mqjeff
PostPosted: Tue Oct 16, 2012 7:02 am    Post subject: Reply with quote

Grand Master

Joined: 25 Jun 2008
Posts: 17447

The basic and obvious answer is that they are going to the *other* instances of the clustered queue.
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Vitor
PostPosted: Tue Oct 16, 2012 7:18 am    Post subject: Reply with quote

Grand High Poobah

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

mqjeff wrote:
The basic and obvious answer is that they are going to the *other* instances of the clustered queue.




And if there's no other clustered instance, they're going to (or trying to go to) where they think the other instance was before it was incorrectly removed from the cluster.
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Boomn4x4
PostPosted: Tue Oct 16, 2012 9:38 am    Post subject: Reply with quote

Disciple

Joined: 28 Nov 2011
Posts: 172

Thank you...

No idea where this zombie queue is or what remains of it, but I did figure out that this other person's development system had been a member of a total of three clusters in the past few months. I was able to properly remove him from all but the one I'm concerned about and all is working.
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mvic
PostPosted: Tue Oct 16, 2012 1:42 pm    Post subject: Re: Every other message getting "lost" Reply with quote

Jedi

Joined: 09 Mar 2004
Posts: 2080

Boomn4x4 wrote:
Question 2: Where are those seemingly "lost" messages going?

To a queue. What does the getter app look like? How does it run? Is it a client or a server app?
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