Amazon EMR now supports using Amazon S3 as a data store for Apache HBase

You can now use Amazon S3 as a data store for Apache HBase on Amazon EMR using the EMR File System. Apache HBase is a distributed, non-relational database built for random, strictly consistent realtime access for tables with billions of rows and millions of columns. By using Amazon S3 as a data store for Apache HBase, you can separate your cluster’s storage and compute nodes. This enables you to save costs by sizing your cluster for your compute requirements instead of paying to store your entire dataset with 3x replication in the on-cluster Hadoop Distributed File System (HDFS).
Quelle: aws.amazon.com