If your data center fails, then you probably have to worry more about how to get your data. The namenode state is far smaller and easier to move around and, besides, if you replicate the data elsewhere, you probably already have a namenode next to the replicated data.
Namenode failure (without the data center failure) IS a real scenario that needs to be addressed if losing your cluster is a terribly bad thing. There are numerous provisions for that, but there isn't yet a truly HA solution. On 3/13/08 1:50 PM, "Cagdas Gerede" <[EMAIL PROTECTED]> wrote: > I have a question. As we know, the name node forms a single point of failure. > In a production environment, I imagine a name node would run in a data > center. If that data center > fails, how would you a put a new name node in place in another data > center that can take over without minimum interruption? > > I was wondering if anyone has any experience/ideas/comments on this. > > Thanks > > -Cagdas
