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From Tim Bain <>
Subject Re: Messages expiration not always working
Date Tue, 23 Oct 2018 12:52:35 GMT
It's my understanding (from what others have written on this mailing list,
not from checking the code) that message expiration is checked twice: once
broker-side when the message is dispatched to the consumer (or queue
browser), and once client-side when the message is taken from the front of
the prefetch buffer to be consumed. Both of those mechanisms rely on having
a consumer, and I believe that the design decision was made to not create
an additional code path that would require runtime resources and code
maintenance simply to expire messages in the absence of a consumer.


On Oct 22, 2018 2:11 PM, "ncasaux" <> wrote:


I have a configuration with one virtualtopic and three queues.
I send multiples messages on the virtualtopic and they all have a expiration

Sometime, when the queue has no consumer, the expired messages on the queue
are not removed properly and remain on the queue, but this does not happen
to all the queues...
I don't know how to reproduce this:


As you can see on the picture, the 2 queues with no consumer should have the
same size, but it's not the case...

The problem is that is uses a huge amount of diskspace:

As soon as I browse the queue from the webconsole, I can see that the
expiration mechanism starts, and after a couple of minutes, all the expired
messages are gone.

Could anyone explain why this happens ?
I'm using ActiveMQ 5.15.4

Thanks in advance.

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