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From Hiram Chirino <hi...@hiramchirino.com>
Subject Re: Apollo and perl client - unable to dequeue all messages from queue
Date Thu, 26 Apr 2012 12:02:43 GMT
Hi Ivan,

Thanks for the bug report!  I've been able to reproduce using your test
case, It looks like messages are being 'released' when the consumer
disconnects and then don't subsequently get delivered.  I'll look into
fixing this asap.

On Mon, Apr 23, 2012 at 8:13 AM, <isim@centrum.cz> wrote:

>
> Hi all,
>
> I'm looking for a messaging engine which can be able to work with
> application written in perl. So, I installed Apollo 1.2 on my linux box and
> I wrote the first test script using Net::STOMP::Client module. But I
> encounter a problem. I enqueued 10000 persistent messages and I tried to
> dequeue them. It works ok if the perl script dequeue all 10000 messages.
> But if the script dequeue  100 messages only (example) and finishes,  after
> a few runs the server stops to serve messages. I looks like the queue is
> empty. Through GUI administration I can see that there are messages in the
> queue, but perl script is unable to retrieve them - wait_for_frames()
> timeouted. If I restart Apollo server, I can continue retrieving messages
> until the server is stuck again. I downloaded the latest Apollo snapshot
> and nothing changed. I also changed the default store engine to DBD store.
> The same. I even changed JVM engine from my default OpenJDK 64-Bit Server
> VM 1.6.0_23 (Sun Microsystems Inc.)'' to th
>  e latest 'Java HotSpot(TM) 64-Bit Server VM 1.7.0_03 (Oracle
> Corporation)'. No change.  When the Apollo server is "blocked" and client
> is unable to retrieve messages, I can enqueue another messages from other
> producer and client receives these messages. But the original ones are
> blocked until I restart server. There is no warning or error message on
> Apollo console.
>
> Because this is my first atempt to work with STOMP I'm not sure if the
> problem is not on my side but currently I have no idea what is wrong.
>
> The test script is here:
> http://gist.github.com/5ef9113f6b6aec81bca9
>
> perl <script.pl> produce    ....enqueues 10000 messages
> perl <script.pl> consume 10000  ... dequeues 10000 messages
>
> but
>
> perl <script.pl> produce    ....enqueues 10000 messages
> for i in seq `1 100`; do perl <script.pl> consume 100; done   .... is
> blocked after a few runs (looks random count)
>
>
> Thanks for any help.
>
> Ivan
>



-- 

**

*Hiram Chirino*

*Software Fellow | FuseSource Corp.*

*chirino@fusesource.com | fusesource.com*

*skype: hiramchirino | twitter: @hiramchirino<http://twitter.com/hiramchirino>
*

*blog: Hiram Chirino's Bit Mojo <http://hiramchirino.com/blog/>*

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