Jethro Data is an index-based SQL engine for Hadoop. It lets you run 100 X faster interactive ad-hoc queries, live dashboards and reports. With Jethro, you enjoy the scalability of Hadoop with the performance of an analytical database, in one system – same Hadoop, same data and no need to move, restructure or convert data for analytics.
Jethro works by automatically indexing data as it is written into Hadoop. Queries use indexes to access only the data they need instead of performing a full-scan of the entire dataset, leading to an increase in speed and a dramatic reduction in use of computing resources.