Conventional wisdom is that once Big Data is at rest, don’t move it or shake it. Akin to “don’t fold, spindle, or mutilate.” But seriously, if mainstream enterprises adopt Hadoop, they will expect it to become more robust. And so you start looking at things like data replication, or at least replication of the NameNode or other components that govern how and where data resides in Hadoop and how operations are performed against.
So here’s an interesting one to watch: Wandisco buying Altostore. They are applying replication technol developed for Subversion to Hadoop. We’re gonna check this one out