 The source code of WebScaleSQL is hosted on GitHub and licensed under the terms of version 2 of the GNU General Public License.The project website announced in December 2016 that the companies involved would no longer contribute to the project.Running MySQL on numerous servers with large amounts of data, at the scale of terabytes and petabytes of data, creates a set of difficulties that in many cases arise the need for implementing specific customized MySQL features, or the need for introducing functional changes to MySQL.