Mailing-List: contact users-help@activemq.apache.org; run by ezmlm
Precedence: bulk
Reply-To: users@activemq.apache.org
Received-SPF: pass (nike.apache.org: domain of burtonator2011@gmail.com
 designates 209.85.215.52 as permitted sender)
MIME-Version: 1.0
Sender: burtonator2011@gmail.com
In-Reply-To: <1405642701051-4683385.post@n4.nabble.com>
References: 
 <CAAZU44mq8=0KG0tO-o5SRf5GZHCaZ0k+sYLNzJf_MhZkaG=k9g@mail.gmail.com>
 <CAAZU44=LYMXW2cFKzfOLcfqqw4f3Ykm0Zn1Pkqrp4fj-EVPUHA@mail.gmail.com>
 <1405642701051-4683385.post@n4.nabble.com>
From: Kevin Burton <burton@spinn3r.com>
Date: Thu, 17 Jul 2014 19:38:09 -0700
Message-ID: 
 <CAAZU44m+S2F8_mCKdCz8Jzm7qbC7nkkf-g_PeCZFQzhkZSkGuQ@mail.gmail.com>
Subject: Re: Setting ?jms.prefetchPolicy.all=10 causes
 getDestinationSource().getQueues()
 to return with missing queues...
To: users@activemq.apache.org
Content-Type: multipart/alternative; boundary=001a11c36b72124acf04fe6ea7d3

--001a11c36b72124acf04fe6ea7d3
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

Ah.. the problem is that it's an API design bug.

getQueues() seems to imply a synchronous fetch of the queues.

So really there's no way to know if you have them all.. .

there's no startup countdown latch or anything to imply that you have a
snapshot of all the queues.

=E2=80=A6 so thats the bug essentially :)

Kevin


On Thu, Jul 17, 2014 at 5:18 PM, artnaseef <art@artnaseef.com> wrote:

> I don't see a bug in DestinationSource - can you be more specific what yo=
u
> see there?
>
> Since the DestinationSource is a message listener reading advisory
> messages,
> there definitely is a chance for race conditions.  And smaller prefetch
> values can significantly slow down delivery of the advisories.
>
> Note that the initial creation of an advisory subscription receives a
> message for every destination already known to the broker.
>
> Please advise on what you see.
>
>
>
> --
> View this message in context:
> http://activemq.2283324.n4.nabble.com/Setting-jms-prefetchPolicy-all-10-c=
auses-getDestinationSource-getQueues-to-return-with-missing-queue-tp4683383=
p4683385.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>


--=20

Founder/CEO Spinn3r.com
Location: *San Francisco, CA*
blog: http://burtonator.wordpress.com
=E2=80=A6 or check out my Google+ profile
<https://plus.google.com/102718274791889610666/posts>
<http://spinn3r.com>

--001a11c36b72124acf04fe6ea7d3--