Basic Clustering/Load Balancing Question

[kiran222]

I need to run a 2 node JBoss cluster with the following requirements:

1) Both the nodes will have a Queue with same name. Lets say the name as "Purchase Queue"
2) From a client, when I lookup "Purchase Queue", the system should return a Queue from any one of the two nodes in a Round-Robin fashion. Doesn't matter if it is Round Robin or some other load balancing mechanism.
3) If the client is sending a message to the Queue on Node 1, and the Node 1 happens to crash, the client should (fail-over) send the same message to Node 2.

The simple question is:
Which version of JBoss supports both #2 and #3 requirements? I am so confused going over various Forums that one supports one feature and the other does not.

If there is one topic that discussed these already, a pointer to that is highly appreciated.

I am a fan of open-source solutions. Unfortunately, our team is already looking into other commercial solutions since we could not get any definitive answer with JBoss.

Have fun!
Kiran

[razor_harm]

"kiran222" wrote:
I need to run a 2 node JBoss cluster with the following requirements:

1) Both the nodes will have a Queue with same name. Lets say the name as "Purchase Queue"

You don't actualy need two queue's. You could create a cluster using HA-JMS. This cluster provides automaticly fail-over.

2) From a client, when I lookup "Purchase Queue", the system should return a Queue from any one of the two nodes in a Round-Robin fashion. Doesn't matter if it is Round Robin or some other load balancing mechanism.

Same thing here,... Do you realy need to return the queue's using a round-robin style? Or do you want your messages to be distributed using a load-balancing style? If the latter, if you use HA-JMS, again you get fail-over for free. You also get load-balancing for free.

3) If the client is sending a message to the Queue on Node 1, and the Node 1 happens to crash, the client should (fail-over) send the same message to Node 2.

Again this is provided by HA-JMS.

The simple question is:
Which version of JBoss supports both #2 and #3 requirements? I am so confused going over various Forums that one supports one feature and the other does not.

I believe that since JBoss 3.2.4 these features are available.

For more information look here:
http://www.jboss.org/wiki/Wiki.jsp?page=JBossMQHA


If there is one topic that discussed these already, a pointer to that is highly appreciated.

I am a fan of open-source solutions. Unfortunately, our team is already looking into other commercial solutions since we could not get any definitive answer with JBoss.

Have fun!
Kiran

[thinkaholic]

How long does it take to a failover of the JMS to happen in the case of a crash.
I tried it and it takes with me about 20 minutes to have my queue up and running on the second node and I think I am missing something here since it not acceptable at all to have a 20 minutes down time.

Using JBoss 4.0.1
Windows 2000 server
J2sdk 1.4.2_07

[razor_harm]

"thinkaholic" wrote:
How long does it take to a failover of the JMS to happen in the case of a crash.
I tried it and it takes with me about 20 minutes to have my queue up and running on the second node and I think I am missing something here since it not acceptable at all to have a 20 minutes down time.

It certainly does not take 20 minutes. My setup (using JBoss 3.2.7) takes about 5~10 seconds to do the fail-over.

[adrian.brock]

Most likely it some OS configuration related to keep-alive config of tcp/ip sockets?
Your 20 minutes is some kind of network (notwork :-) timeout