[Engine-devel] Ideas about engine clustering?

[Yair Zaslavsky]

----- Original Message -----
> From: "plysan" <plysab at gmail.com>
> To: engine-devel at ovirt.org
> Sent: Wednesday, August 21, 2013 4:49:31 PM
> Subject: [Engine-devel] Ideas about engine clustering?
> 
> Hello, guys:
> 
> I'm trying to make a jboss clustering environment for engine. But felt the
> difficuty too.
> So I want to know if any one is working on this? I googled it and haven't
> found anything.
> 
> I know there will be lots of things to do for engine migrating to
> clustering environment. I just want to know what problem need to be solved?
> I would like to list the things I think that is needed to do(or solve):
> 1. run jboss in standalone-ha mode or domain mode.
> 2. add @Clustered annotation to each EJB, I think this will solve the
> replication problem in cluster, probably lots of details in it.

This is not enough, there are singletons which are not Ejbs. Will you transform them all to @Clustered Ejbs?


> 3. QuartzScheduler problem, only one node running a scheduler is enough at
> a time instead of each node running one.
> 4. use mod_cluster to handle load balancing.
> 5. postgresql clustering.
> 6. There should be more, but hope anyone can think about it :D

InMemoryLockManager - Commands can get exclusive or shared lock (in order to solve a race between canDoAction and executeAction) - these locks will have to be replicated... Use infinispan for this?

> 
> Any ideas?
> 
> Thanks!
> 
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