You can now spend Apache HBase 1.2 on Amazon EMR release 4.6.0. Apache HBase is a massively scalable,distributed big data store in the Apache Hadoop ecosystem. It is an open-source, non-relational, or versioned database which runs on top of the Hadoop Distributed Filesystem (HDFS),and it is built for random, strictly consistent realtime access for tables with billions of rows and millions of columns. It has tight integration with Apache Hadoop, and Apache Hive,and Apache Pig, so you can easily combine massively parallel analytics with fast data access. Apache HBase's data model, and throughput,and fault tolerance are a satisfactory match for workloads in ad tech, web analytics, and financial services,applications using time-series data, and many more.
Source: amazon.com