Hi Praveen, Have you set the capacity / prefetch for the receivers to one message? I believe the capacity defines how many messages can be "buffered" by the client API in background while you are still processing the first message. That may cause that both your clients receive 5 messages, even when the processing in the first client takes a longer time.
Regards Jakub On Wed, Oct 26, 2011 at 03:02, Praveen M <[email protected]> wrote: > Hi, > > I ran the following test > > 1) I created 1 Queue > 2) Registered 2 consumers to the queue > 3) Enqueued 10 messages to the Queue. [ The first enqueued message is long > running. I simulated such that the first message on consumption takes about > 50 seconds to be processed] > 4) Once the enqueue is committed, the 2 consumers each pick a message. > 5) The 1st consumer that got the long running message works on it for a long > time while the second consumer that got the second message keeps processing > and going to the next message, but only goes as far until it processes 5 of > the 10 messages enqueued. Then the 2nd consumer gives up processing. > 6) When the 1st consumer with the long running message completes, it then > ends up processing the remaining messages and my test completes. > > So it seems like the two consumers were trying to take a fair share of > messages that they were processing immaterial of the time it takes to > process individual messages. Enqueued message = 10, Consumer 1 share of 5 > messages were processed by it, and Consumer 2's share of 5 messages were > processed by it. > > > This is kinda against the behavior that I'd like to see. The desired > behavior in my case is that of each consumer keeps going on if it's done and > has other messages to process. > > In the above test, I'd expect as consumer 1 is working on the long message, > the second consumer should work its way through all the remaining messages. > > Is there some config that I'm missing that could cause this effect?? Any > advice on tackling this will be great. > > Also, Can someone please explain in what order are messages delivered to the > consumers in the following cases? > > Case 1) > There is a single Queue with more than 1 message in it and multiple > consumers registered to it. > > Case 2) > There are multiple queues each with more than 1 message in it, and has > multiple consumers registered to it. > > > > Thank you, > -- > -Praveen > --------------------------------------------------------------------- Apache Qpid - AMQP Messaging Implementation Project: http://qpid.apache.org Use/Interact: mailto:[email protected]
