This document provides an overview of InfiniDB, a column-oriented database for Hadoop. It discusses InfiniDB's technical foundations including its parallelism, partitioning model, and I/O efficiencies. The document also covers when InfiniDB is appropriate for analytic workloads compared to OLTP workloads. Benchmark results are presented showing InfiniDB outperforming Impala on standard and ad-hoc queries against large datasets.