re: Big Data Debate: Will HBase Dominate NoSQL?
A bit of a silly premise, and definitely not an either/or scenario: HBase will clearly be used when Hadoop is used - end of story. Cassandra isn't going to displace HBase, but will co-exist to handle other, related use cases, more elegantly. Plus, MongoDB will be used as a more modern era alternative to mySQL, HANA will be used to fly through SAP analytics, MarkLogic excels at content-oriented apps. And there are several dedicated cloud databases too. The NoSQL (Not Only SQL) movement gains strength from diversity, and has pushed Oracle, IBM and Microsoft to offer up columnar, for example, options. But at this point NONE of the NoSQL databases could be considered dominant, and despite the growing popularity of Hadoop, no way HBase is going to extend into a more general purpose DB, it lacks the architectural chops (pointed out nicely by Mr. Ellis), and it lacks the expertise base with the chops.
When the day comes where there are more production Hadoop implementations than the combination of SAS, ODW, Teradata, IBM's many options, SAP BW and HANA, Microstrategy, Tableau, etc., etc., etc., well, maybe we can talk dominant down one DNA strain of the industry. That will take quite awhile.