Hello Bela, Yes, we need some kind of policy. But I thought about something a little bit different. In fact, there is already a way for services that have state to know about partition merging and plug into it. Instead I thought about a policy where you can receive events when you are no more "on the good side" (defined by the policy) of the network partition. This could be, for example, access to a common DB, some data in a common DB, the minimal size of the partition, etc. As long as the policy is not satisfied, the service would be in stand-by.
Cheers, sacha > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Bela Ban > Sent: mardi, 1. avril 2003 02:31 > To: [EMAIL PROTECTED] > Subject: Re: [JBoss-dev] Partition merge and service state > merge algorithm > > > David Klimek wrote: > > > Hi Sacha, > > > > thank you very much for your comments. Now I believe I have quite > > clean picture of partition merge issues. > > > > Maybe the conditions and limitations you mentioned should > be added to > > documentation as they are not obvious and there can be a > lot of people > > living, as I did before, in paradise, where all the mess with state > > merging, is handled by clustering framework. > > > Maybe we should come up with a conflict resolution policy, similar to > the failover policy: the policy is user-defined and - > whenever there is > a merge - it is called with all substates. At this point it needs to > implement the merge and update the local copy. > > For the state service we could for instance provide a simple default > policy which applies the union of all states and sees this as the new > state. The only requirement for such a policy is that it is > deterministic. > > -- > Bela Ban > www.javagroups.com > (408) 316-4459 > > > > > ------------------------------------------------------- > This SF.net email is sponsored by: ValueWeb: > Dedicated Hosting for just $79/mo with 500 GB of bandwidth! > No other company gives more support or power for your dedicated server > http://click.atdmt.com/AFF/go/sdnxxaff00300020aff/direct/01/ > _______________________________________________ > Jboss-development mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/jboss-development > ------------------------------------------------------- This SF.net email is sponsored by: ValueWeb: Dedicated Hosting for just $79/mo with 500 GB of bandwidth! No other company gives more support or power for your dedicated server http://click.atdmt.com/AFF/go/sdnxxaff00300020aff/direct/01/ _______________________________________________ Jboss-development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
