Apache HBase is the Hadoop database, a distributed, scalable, big data store.
Use Apache HBase when you need random, realtime read/write access to your Big Data. This project's goal is the hosting of very large tables -- billions of rows X millions of columns -- atop clusters of commodity hardware. Apache HBase is an open-source, distributed, versioned, non-relational database modeled after Google's Bigtable: A Distributed Storage System for Structured Data by Chang et al. Just as Bigtable leverages the distributed data storage provided by the Google File System, Apache HBase provides Bigtable-like capabilities on top of Hadoop and HDFS.
See the Architecture Overview, the Apache HBase Reference Guide FAQ, and the other documentation links on the left!
The HBase distribution includes cryptographic software. See the export control notice here
June 5th, 2014 HBase BOF at Hadoop Summit, San Jose Convention Center
May 5th, 2014 HBaseCon2014 at the Hilton San Francisco on Union Square
March 12th, 2014 HBase Meetup @ Ancestry.com in San Francisco