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From Claus Ibsen <>
Subject Re: [VOTE] Apache ActiveMQ 5.11.0 (rc3)
Date Tue, 03 Feb 2015 16:55:09 GMT

Just wanted to say I have stumbled on a weird issue with the 5.11.0
release which I had trouble reproducing consistently.

The issue is subtle causing AMQ to continuously re-create dynamic
producer mbeans in the JMX tree. This is using a Camel spring app with
the AMQ connection pool.

Though just now I was able to see that 5.10.0 was stable and the
mbeans didnt re-create continusly, but with 5.11.0 that happens (with
no other change that switching from 5.10.0 to 5.11.0)

Though I think that issue could go unnoticed as the jmx tree looks
okay, but you may discover a flicker in jconsole when it redraws, and
then there is a little CPU time to create/destroy the mbeans.

I noticed this with hawtio as it also "flicker" when the jmx tree is
redrawn. And therefore was using hawtio to track down the issue.

I enabled a WARN logging when a mbean was registerede/unregistered and
you can see

WARN  | ActiveMQ Transport: tcp:/// | JMX
WARN  | ActiveMQ Transport: tcp:/// | JMX
WARN  | ActiveMQ Transport: tcp:/// | JMX
WARN  | ActiveMQ Transport: tcp:/// | JMX
WARN  | ActiveMQ Transport: tcp:/// | JMX
WARN  | ActiveMQ Transport: tcp:/// | JMX

Just wanted to share this and say there is maybe a glitch in this release.

As I discovered this using hawtio, I created a branch with my current
work code that reproduces the issue.

The commit has instructions how to reproduce.

As I was a hunt in the hay-stack I had to disable various stuff in the
hawtio spring xml file where we setup stuff we use for testing and
developing, hence the removal of the NOB, and some Camel routes and

On Fri, Jan 30, 2015 at 3:00 PM, Gary Tully <> wrote:
> Hi folks,
> I've just cut a third release candidate for the long-awaited 5.11.0 release.
> This release has more than 120 bug fixes and improvements.
> -note-
> this candidate includes the fix for the 'reliably' broken test case from rc2
> however there can be no expectation of a 'reliable' full test run from
> mvn install.
> I have raised to address that.
> I think a resolution to that issue would address all of the
> disapproving commentary on the rc2 vote. If you voted -1 last time
> round, please chime in on AMQ-5552.
> -end note-
> Could you please review the artifacts and vote?
> The list of resolved issues is here:
> You can get binary distributions here:
> Source archives are here:
> Maven2 repository is at:
> Source tag:
> The vote will remain open for 72 hours.
> [ ] +1  approve the release as Apache ActiveMQ 5.11.0
> [ ] +0  no opinion
> [ ] -1  disapprove (and reason why)
> Here's my +1
> Regards,
> Gary.

Claus Ibsen
Red Hat, Inc.
Twitter: davsclaus
Author of Camel in Action:

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