Hypertable is a high performance, open source, massively scalable database modeled after Bigtable, Google's proprietary, massively scalable database. Hypertable runs on top of a distributed file system such as the Apache HDFS, GlusterFS or the CloudStore Kosmos File System (KFS). It is written almost entirely in C++ as the developers believed it had significant performance advantages over Java.
Hypertable software was originally developed at the company Zvents before 2008. Doug Judd was a promoter of Hypertable. In January 2009, Baidu, the Chinese language search engine, became a project sponsor. A version 0.9.2.1 was described in a blog in February 2009. Development ended in March 2016.
Multi-version Concurrency Control (MVCC)
The system uses Multi-Version Concurrency Control (MVCC) and by default will auto-assign revision numbers using a timestamp.
https://github.com/hypertable/hypertable
http://www.hypertable.com/documentation/
Zvents
2008
2016
Baidu
C++, Java, Perl, PHP, Python, Ruby