RE: Issue with Multiple topics and multiple subcription

"Tim Anderson" <[email protected]>
Newsgroups gmane.comp.java.openjms.user
Message-ID <[email protected]>
See inline. 

> From: Sale Rahul
> 
> Dear Tim,
> Thanks again.
> Can you give some more elobaration about how to take stack 
> dump on client side. 

http://openjms.sourceforge.net/faq.html#where-to-get-help
Search forward to "thread dump".

> 
> Another observation is like in our implementation, when we 
> run the OpenJMS  Server in DEBUG info on, it show that the 
> subcribers gets registered to that topic and the associated 
> session get closed. Not sure why is this happening. The same 
> code runs just fine for other topics, but for some topic it 
> just closes the session.
> THere is no particular special case for these topics.

IIRC, in 0.7.6.x if the server can't ping the client, it will drop
the associated session. This could be related to a deadlock in
the transport layer.

-Tim


> --- Tim Anderson <[email protected]> wrote:
> 
> > Another possibility in 0.7.6 and earlier are deadlocks in the 
> > transport layer, particularly the tcp connector.
> > You can verify if this is a problem by looking at the stack 
> dumps of 
> > your clients.
> > 
> > > -----Original Message-----
> > > From: openjms-user-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> > > [mailto:openjms-user-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org]
> > On Behalf
> > > Of Sale Rahul
> > > Sent: Tuesday, 1 November 2005 11:11 PM
> > > To: [email protected]
> > > Subject: RE: [openjms-user] Issue with Multiple
> > topics and
> > > multiple subcription
> > > 
> > > THanks Tim for anwsering the question.
> > > I looked through all the possible causes, but it
> > seems they
> > > are not applicable for our situation.
> > > The reason being, we are pubishing the messages
> > after the
> > > subcription, all messages have 7 days expiry time
> > and
> > > subcriber are running on the same machine as that
> > of the openJMS.
> > > 
> > > Thanks in advance.
> > > 
> > > 
> > > Regards
> > > Rahul
> > > 
> > > --- Tim Anderson <[email protected]> wrote:
> > > 
> > > > Possible explanations:
> > > > 1. your subscribers are being created after the 
> > > >   messages have been published.
> > > >   Subscribers only receive messages published
> > from the
> > > >   time they were created.
> > > > 2. messages are expiring
> > > > 3. you're running on multiple hosts, and the
> > client
> > > >    hosts have an advanced system clock with
> > respect to the
> > > >    server host.
> > > >    This affects [2] above, and possibly [1] if
> > you are
> > > >    running 0.7.6.x.
> > > > 
> > > > -Tim
> > > > 
> > > > 
> > > > > -----Original Message-----
> > > > > From: openjms-user-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> > 
> > > > >
> > [mailto:openjms-user-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org]
> > > > On Behalf
> > > > > Of Sale Rahul
> > > > > Sent: Tuesday, 1 November 2005 4:09 AM
> > > > > To: [email protected]
> > > > > Subject: [openjms-user] Issue with Multiple
> > topics
> > > > and
> > > > > multiple subcription
> > > > > 
> > > > > Hello All,
> > > > > We are trying to subcribe to multiple JMS
> > Topic.
> > > > > But we have observed that, due to some reason,
> > > > couple of our
> > > > > Subcribers doesnot get any messages from their
> > > > respective Topics ?
> > > > > We are wondering why ?
> > > > > 
> > > > > Plesae let me know possible reasons ?
> > > > > 
> > > > > 
> > > > > 
> > > > > Thanks in advance
> > > > > 
> > > > > 
> > > > > With Warm Regards
> > > > > Rahul Saley
> > > > > 
> > > > > 
> > > > > 	
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