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Posted to users@activemq.apache.org by jahlborn <ja...@gmail.com> on 2015/12/03 16:20:46 UTC
Message browsing hanging
So, we've had issues on and off where it seems like message browsing hangs.
I've managed to reproduce the scenario in my dev setup, but i'm not sure how
to get to the bottom of the problem. I'm using activemq 5.9.1. I have a
network with two (embedded) brokers. i have a queue which has 8 messages on
one broker and 2 messages on the other broker. i can browse the 8 messages
just fine. when i try to browse the 2 message (using the Enumeration), i
get the 2 messages and then the Enumeration.hasMoreElements() call hangs
(doesn't return false). (note, the first message of the two has a
redelivery count of 1). While i'm testing this, there are no other
consumers of the queue.
Does anyone have any suggestions as to what state inside activemq i should
investigate in order to determine why the browser is not correctly
determining that it has found all the messages?
thanks,
-james
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Re: Message browsing hanging
Posted by Christopher Shannon <ch...@gmail.com>.
I would try a newer ActiveMQ version before putting in a JIRA. There were
some fixes in newer versions that are related to message browsing.
On Sun, Dec 20, 2015 at 10:44 AM, Tim Bain <tb...@alumni.duke.edu> wrote:
> The behavior you describe sounds like a bug to me. Since no one responded
> to say otherwise, please submit a bug in JIRA for this issue.
>
> Tim
> On Dec 7, 2015 8:14 AM, "jahlborn" <ja...@gmail.com> wrote:
>
> > For more context, the ActiveMQQueueBrowser is obviously hanging out if
> > hasMoreElements(), which is then calling into waitForMessage(). This
> > method
> > keeps sending a pull command to the consumer. This will result in a
> > MessagePull command sent asynchronously. where will that go? how can i
> > determine what might be going wrong on the receiver end? Any pointers
> > would
> > be great.
> >
> >
> > jahlborn wrote
> > > So, we've had issues on and off where it seems like message browsing
> > > hangs. I've managed to reproduce the scenario in my dev setup, but i'm
> > > not sure how to get to the bottom of the problem. I'm using activemq
> > > 5.9.1. I have a network with two (embedded) brokers. i have a queue
> > > which has 8 messages on one broker and 2 messages on the other
> broker. i
> > > can browse the 8 messages just fine. when i try to browse the 2
> message
> > > (using the Enumeration), i get the 2 messages and then the
> > > Enumeration.hasMoreElements() call hangs (doesn't return false).
> (note,
> > > the first message of the two has a redelivery count of 1). While i'm
> > > testing this, there are no other consumers of the queue.
> > >
> > > Does anyone have any suggestions as to what state inside activemq i
> > should
> > > investigate in order to determine why the browser is not correctly
> > > determining that it has found all the messages?
> > >
> > > thanks,
> > > -james
> >
> >
> >
> >
> >
> > --
> > View this message in context:
> >
> http://activemq.2283324.n4.nabble.com/Message-browsing-hanging-tp4704569p4704659.html
> > Sent from the ActiveMQ - User mailing list archive at Nabble.com.
> >
>
Re: Message browsing hanging
Posted by Tim Bain <tb...@alumni.duke.edu>.
The behavior you describe sounds like a bug to me. Since no one responded
to say otherwise, please submit a bug in JIRA for this issue.
Tim
On Dec 7, 2015 8:14 AM, "jahlborn" <ja...@gmail.com> wrote:
> For more context, the ActiveMQQueueBrowser is obviously hanging out if
> hasMoreElements(), which is then calling into waitForMessage(). This
> method
> keeps sending a pull command to the consumer. This will result in a
> MessagePull command sent asynchronously. where will that go? how can i
> determine what might be going wrong on the receiver end? Any pointers
> would
> be great.
>
>
> jahlborn wrote
> > So, we've had issues on and off where it seems like message browsing
> > hangs. I've managed to reproduce the scenario in my dev setup, but i'm
> > not sure how to get to the bottom of the problem. I'm using activemq
> > 5.9.1. I have a network with two (embedded) brokers. i have a queue
> > which has 8 messages on one broker and 2 messages on the other broker. i
> > can browse the 8 messages just fine. when i try to browse the 2 message
> > (using the Enumeration), i get the 2 messages and then the
> > Enumeration.hasMoreElements() call hangs (doesn't return false). (note,
> > the first message of the two has a redelivery count of 1). While i'm
> > testing this, there are no other consumers of the queue.
> >
> > Does anyone have any suggestions as to what state inside activemq i
> should
> > investigate in order to determine why the browser is not correctly
> > determining that it has found all the messages?
> >
> > thanks,
> > -james
>
>
>
>
>
> --
> View this message in context:
> http://activemq.2283324.n4.nabble.com/Message-browsing-hanging-tp4704569p4704659.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>
Re: Message browsing hanging
Posted by jahlborn <ja...@gmail.com>.
For more context, the ActiveMQQueueBrowser is obviously hanging out if
hasMoreElements(), which is then calling into waitForMessage(). This method
keeps sending a pull command to the consumer. This will result in a
MessagePull command sent asynchronously. where will that go? how can i
determine what might be going wrong on the receiver end? Any pointers would
be great.
jahlborn wrote
> So, we've had issues on and off where it seems like message browsing
> hangs. I've managed to reproduce the scenario in my dev setup, but i'm
> not sure how to get to the bottom of the problem. I'm using activemq
> 5.9.1. I have a network with two (embedded) brokers. i have a queue
> which has 8 messages on one broker and 2 messages on the other broker. i
> can browse the 8 messages just fine. when i try to browse the 2 message
> (using the Enumeration), i get the 2 messages and then the
> Enumeration.hasMoreElements() call hangs (doesn't return false). (note,
> the first message of the two has a redelivery count of 1). While i'm
> testing this, there are no other consumers of the queue.
>
> Does anyone have any suggestions as to what state inside activemq i should
> investigate in order to determine why the browser is not correctly
> determining that it has found all the messages?
>
> thanks,
> -james
--
View this message in context: http://activemq.2283324.n4.nabble.com/Message-browsing-hanging-tp4704569p4704659.html
Sent from the ActiveMQ - User mailing list archive at Nabble.com.