Zettaset today announced the release of Version 4 of its big data management solution, which offers several new service management features, including the industry's first NameNode Failover, as well as JobTracker Failover, Oozie Failover and a unique visual user interface (UI). Built on Hadoop and other high-volume, open-source technologies, Version 4 offers greater stability within Hadoop while providing a solution to manage big data that is more accessible to IT pros, yielding…