Availability: Open Source
It is an open source data store designed for real-time exploratory analytics on large data sets(big data)
It is commonly used in business intelligence/OLAP applications to analyze high volumes of real-time and historical data.
It is used in production by technology companies such as Alibaba,Airbnb, Cisco,eBay,NetFlix,PayPal,Yahoo
Column-oriented storage layout
Distributed shared-nothing architecture
Ability to generate and leverage indexing