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From alanmc <>
Subject Re: ActiveMQ-5.1.0-RC3 - Messages going missing
Date Tue, 22 Apr 2008 03:01:56 GMT

We're seeing the same behavior with 5.1.0.  We're basically running the
default broker configuration, with advisory support turned off.  We were
using 5.0.0, but saw memory leakage and wanted to try out 5.1.0 and after
switching over with the exact same configuration we started seeing
intermittent message dropping, probably about 1 in 3 messages going missing. 
The broker shows all messages as enqueued and dequeued.

We're using ActiveMQ as middleware between a website and back-end services. 
We run python clients and model Request-Reply by creating a temp queue and
sending the request with the reply-to attribute populated.  Works great on
5.0.0 (except for troubling memory usage), but switch to 5.1.0 and 1 in 3
messages just disappear.

Dhruba Bandopadhyay-2 wrote:
> Further to this I'd like to add that the broker shows that all 20000
> messages have been enqueued and dequeued.  So the broker queue has no
> messages remaining on it.
> On Thu, Apr 17, 2008 at 2:24 PM, Dhruba Bandopadhyay <>
> wrote:
>> Hi,
>>  Using spring 2.5.3 mdps, tomcat 6.0.16 and activemq 5.1.0-rc3 with 1
>>  producer, 3 brokers and 1 consumer running 5 threads with almost
>>  default broker configuration.
>>  Is this correct behaviour given my setup?  What are the usual causes
>>  of messages going missing?  I don't see any exceptions or failures
>>  anywhere.  The consumer stats show that the consumer has only
>>  processed roughly 19000 messages so it is definitely not the case that
>>  it is has processed them but failed to do so correctly.
>>  Any help, advice or link to appropriate documentation would be much
>>  appreciated as for me this is a serious problem.
>>  Many thanks.

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