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From Kevin Kilroy <kevkil...@gmail.com>
Subject Re: Should Total Message Count decrease?
Date Thu, 01 Dec 2011 11:46:26 GMT
Hi Martin,

Through your guidance and help. I was able to solve our message count
problem (plus no calls to core ActiveMQ classes)!

Many thanks again.

Kevin.

On Wed, Nov 30, 2011 at 11:13 AM, Martin C. <martinc@gmx.at> wrote:
> Hi,
>
> as you are using queues, you don't have durable/non-durable
> subscriptions. But it appears to me that you do NOT close the last
> consumer, that's why the queue is not actually removed. You also
> should NEVER need to interact with the persistence adapter.
>
> Still, the issue is that you should NOT NEED to remove the queue. I
> still think that you are not acknowledging the consumption of the
> message from the queue.
>
> Unfortunately I don't know anything about FlexClient or the like, I
> always only use plain JMS (without direct interaction with the
> ActiveMQ specifica) from within Java.
>
> Best regards,
> Martin
>
> On Wed, Nov 30, 2011 at 11:38 AM, Kevin Kilroy <kevkilroy@gmail.com> wrote:
>> Hi,
>>
>> I'm using ActiveMQQueues, that are not persisted. The subscriptions
>> are non-durable. I'm removing the queues from the JMX bean by calling
>> removeQueue (which succeeds, as they dis-appear when viewed with
>> JConsole) - However, when I look with a profiler, I still see
>> ActiveMQQueue instances laying around.
>>
>> Therefore, I'm trying to remove these with:
>>
>> broker.getPersistenceAdapter().removeQueueMessageStore((ActiveMQQueue)dest);
>> broker.removeDestination(dest);
>>
>> But an exception is thrown on the removeDestination() call:
>>
>> "javax.jms.JMSException: Destination still has an active subscription:
>> queue://asfdasdf."
>>
>> As far as I'm aware, the FlexClient and it's subscriptions, have been
>> disconnected, by the session being timed-out.
>>
>> Is there a way to cancel the subscriptions on this destination
>> programmatically? As at this point in the app I am sure there are no
>> clients and I just want to clean up.
>>
>> Many thanks again for your input.
>>
>> Kevin.
>>
>> On Wed, Nov 30, 2011 at 10:14 AM, Martin C. <martinc@gmx.at> wrote:
>>> Hi,
>>>
>>> first thing: does it occur while there is a consumer? Or only if there
>>> is no consumer? Are you using queues or topics (maybe even with
>>> persistent subscriptions)?
>>>
>>> TTL basically works the way you expected, BUT it depends if the
>>> messages are persistent or not, and if you have configured expired
>>> messages to be stored in a dead-letter-queue.
>>>
>>> Best regards,
>>> Martin
>>>
>>> On Wed, Nov 30, 2011 at 8:53 AM, Kevin Kilroy <kevkilroy@gmail.com> wrote:
>>>> Hi,
>>>>
>>>> Many thanks for your reply. There is a possibility in my app that
>>>> messages can't be delivered (client has closed the browser). I was
>>>> looking for a mechanism whereby there would be some sort of timeout on
>>>> the message, say a couple of minutes and if it hadn't been delivered
>>>> then the broker can delete it. I tried setting the timeToLive on the
>>>> Producer sending the message, but the build up of messages still
>>>> occurs.
>>>>
>>>> Any ideas?
>>>>
>>>> Thanks again,
>>>>
>>>> Kevin.
>>>>
>>>> On Wed, Nov 30, 2011 at 6:50 AM, Martin C. <martinc@gmx.at> wrote:
>>>>> Hi,
>>>>>
>>>>> if TotalMessageCount is not decreasing, this indicates that you are
>>>>> either not consuming or maybe not committing the consuming transaction
>>>>> / not acknowledging the messages on the receiving side (depends on
>>>>> your acknowledge mode).
>>>>>
>>>>> Best regards,
>>>>> Martin
>>>>>
>>>>> On Tue, Nov 29, 2011 at 4:39 PM, Kevin Kilroy <kevkilroy@gmail.com>
wrote:
>>>>>> Hi,
>>>>>>
>>>>>> I seem to have a memory leak, in that messages seem to be hanging
>>>>>> around in the broker. Using JMX I can see that the TotalMessageCount
>>>>>> is not 0. Also, MemoryPercentUsage eventually gets to 100% and then
>>>>>> the app freezes, if I increase the MemoryLimit, then the app begins
to
>>>>>> run again.
>>>>>>
>>>>>> If I close down all the clients (browsers) then I see there are Consumers.
>>>>>>
>>>>>> I've tried setting a TimeToLive on the JmsTemplate (the Producer
>>>>>> sending the messages to the ActiveMQQueue).
>>>>>>
>>>>>> Does anybody have any ideas how I can debug this further?
>>>>>>
>>>>>> Thanks in advance,
>>>>>>
>>>>>> Kevin.
>>>>>>
>>>>>> I'm using Blazeds 4, Spring 3 and ActiveMQ 5.5.
>>>>>>
>>>>
>>

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