On Wed, Jan 20, 2010 at 4:14 PM, Shawn Jiang <[email protected]> wrote:
> I think there should be a failover example with finer granularity. Just > like what we did > > > > On Wed, Jan 20, 2010 at 7:15 AM, Kevan Miller <[email protected]>wrote: > >> I took a look at the failover demo currently in sandbox, over the weekend. >> I made some updates to get it building/running on my Mac OS machine. >> >> I like the demo. It's a good demonstration of Geronimo's capabilities. I'd >> be interested in seeing a formal release of the demo. A few demo and >> Geronimo related issues we could be thinking about: >> >> 1) Windows support. The current demo is *nix-based. For all I know it may >> only run on Mac OS. >> >> 2) The failover demo is including Grinder. Grinder is a great tool. >> However, it contains LGPL-licensed artifacts. So, we are going to remove it >> from the failover demo. We can provide configuration files and the >> grinder.py "client". However, if users want to run the demo using Grinder, >> they will need to download Grinder on their own. We can provide download >> instructions, but should instruct users to review the Grinder licensing >> before doing so... >> >> 3) Geronimo currently requires multicast for the failover scenario. This >> is great. However, we should also offer unicast-based support, also. I >> frequently encounter users who are unable to use multicast in their >> environments. Providing unicast support would be a valuable addition, I >> think. >> > > > If you are referring Web level cluserting. G2.2 supports unicast-based > failover already. see "Creating a Static Wadi Configuration" section of > [1]. I agree that we need to also support unicast-based support for > Clustering of SFSB. > > [1]http://cwiki.apache.org/GMOxDOC22/wadi-clustering.html > > PS: Clustering of SFSB is mentioned in [1] also, Is it correct ? IIUC, > the failover of SFSB in openEJB has no relationship with WADI at all. > OK, IIUC. OpenEJB use multicast to support failover for session bean but without session replication for stateful session bean. Geronimo utilize WADI to add a session replication for Stateful session bean so that Geronimo support failover for both stateless and stateful session bean. I think we should have more example and document for EJB failover including: 1, Stateless session bean failover example. (this should not need WADI) 2, Stateful session bean failover example. (this should include WADI configuration.) Both of the topics above should be be seperated from [1]. And [1] should focus on the Web level WADI clustering configuration only. [1]http://cwiki.apache.org/GMOxDOC22/wadi-clustering.html > > >> >> --kevan > > > > > -- > Shawn > -- Shawn
