> Am I missing something here? or some mode of pgpool which I am not aware > of?
I thought you were mentioning split-brain for PostgreSQL. For pgpool, I am using virtual IP. Somehow I got the message that the split-brain/virtual IPs in your mail were with reference to PostgreSQL servers.
It is. Once pgpool faces a split-brain scenario, it will pass on the same knowledge to respective PostgreSQL nodes. Try it out, the pull the network cable or bring down your router [don't do it in your production :-) ] then check you logs on both database, check your pgpool logs. You will know what I am talking about.