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From Kevin Burton <>
Subject Re: Queue locks up , purging it allows it to work again.
Date Mon, 20 Apr 2015 03:01:22 GMT
Here’s the public gist of our XML config.  (it needs some comment cleanup
but that’s that we’re running with).

We’re running 5.10.2 .  I’ve reviewed the bugs fixed since then and nothing
seems to apply to our situation. I would upgrade but we run with the memory
persistence adapter and there’s a bug that was introduced in the 11.x
series which impacts memory persistence and advisories.

And I haven’t had time to fix that.

We also have a fix applied that I developed to release lock contention
during queue GC.  It’s within the realm of probability that this could have
introduced a bug but I feel VERY confident that this is not the issue.  We
contributed it back and there’s an outstanding pull request for this on the
5.10 and 5.11 branches but since I didn’t apply it against master it was
never merged :-(

I didn’t TRACE activemq but I can do this now.  Should I do this on the
broker too?  the problem is that this is going to result in a VERY large
log file because it takes about 30 minutes to reproduce this.

In the mean time, I’m going to write a test to see if I can reproduce this
by creating a similar situation of high load and a backlogged queue.

On Sun, Apr 19, 2015 at 5:58 PM, Paul Gale <> wrote:

> What version of ActiveMQ are you using? Please send the contents of you
> activemq.xml file plus details of your producer consumer and how they're
> implemented.
> Have you set the broker's logging to TRACE level prior to running your
> experiments? If so, please attach or use pastebin.

Location: *San Francisco, CA*
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