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1. Re: Question about JMS/HAJMS
adrian.brock Oct 18, 2004 11:23 PM (in response to sheckler)Moderated: Your question is unanswerable.
Use READ THIS FIRST -
2. Re: Question about JMS/HAJMS
sheckler Oct 19, 2004 4:08 AM (in response to sheckler)Hello Adrian,
I read the wiki, I read READ THIS FIRST. What is wrong with the description of my JMS problem?
Is it bad english or is the problem description not clear enough?
I tried to describe in detail a problem in a real production environment which has to be solved (by modifying network architecture or by configuring or modifying software).
A possible hint could be, that for the describred topology (HA)JMS is not
an adequate techique for client server communication.
Network topology:
Not all nodes of a cluster a reachable by the client (no route to host), but the cluster is reachable, because at least one of the cluster nodes is reachable.
Within the cluster HAJMS is running.
Question: Is HAJMS and the above topology compatible or would only a real clusterable JMS be a future solution?
Question: Can HAJMS and local JMS be combined within a cluster?
Thank You for Yout help -
3. Re: Question about JMS/HAJMS
adrian.brock Oct 19, 2004 7:34 AM (in response to sheckler)I couldn't determine what your question actually was, other than something
related to HAJMS.
Network topology:
Not all nodes of a cluster a reachable by the client (no route to host), but the cluster is reachable, because at least one of the cluster nodes is reachable.
HAJMS is designed for high availability in a homogenous cluster.
It does not provide network transparency, there is a TODO to
add this behaviour to JBossMQ:
http://jboss.org/index.html?module=bb&op=viewtopic&t=46193
which would also allow the distribution of topic subscriptions across a cluster.
A number of people have asked for this feature, but nobody seems to
want it enough to actually implement it. -
4. Re: Question about JMS/HAJMS
adrian.brock Oct 19, 2004 7:38 AM (in response to sheckler)It can be trivially implemented for queues with an MDB on a reachable node,
pulling messages from the cluster and sending them to a "local" jms server
using java:/JmsXA -
5. Re: Question about JMS/HAJMS
sheckler Oct 19, 2004 10:16 AM (in response to sheckler)This means parallel local JMS server and HAJMS is possible? I try to go this way.
Thanks for support. -
6. Re: Question about JMS/HAJMS
sheckler Nov 10, 2004 3:33 AM (in response to sheckler)Hi again,
for giving a feedback:This means parallel local JMS server and HAJMS is possible? I try to go this way
This is working fine by now. I have in addition to the HAJMS configuration (from jboss/server/all) the invocation layers as 'local'services as well, some 'local' queues/topics and a second 'local' datasource wich is not using HAJNDI and a correspondig container config for the 'local' MDBs.
Stefan