The delivery of real-time query makes Hadoop accessible to more users — and by orders of magnitude. Its significance goes well beyond delivering a database management system (DBMS) kind of query engine that other products have had for decades. Rather, Hadoop as a platform now supports a whole new paradigm of analytics. With the introduction of real-time query, Hadoop has taken a major step toward unifying the majority of big data analytic applications onto one platform. This research paper targets information technology professionals who have in-depth experience with traditional RDBMS and seek to understand where the Hadoop ecosystem and big data analytics fit.