Apache HBase? It is Hadoop database, a distributed and extensible big data storage. -official website HBase is from Apache HBase, which is a distributed, column-oriented and open source database. The technology comes from the Google paper Bigtable: Distributed Storage System of Structured Data written by Fay Chang. Just as Bigtable uses the distributed data storage provided by Google file system, HBase provides similar functions to Bigtable on Hadoop. HBase is a subproject of Apache Hadoop project. HBase is different from the general relational database, and it is a database suitable for unstructured data storage. Another difference is that HBase is based on columns rather than rows. -From Baidu Encyclopedia