PlanetMysql.ru — информация о СУБД MySQL

The complaints and concerns over Oracle’s pending acquisition of Sun Microsystems and open source MySQL database grew this week to calls for the acquisition, or at least the relatively small MySQL part of it, to be blocked. The Open Rights Group calling for such blockage was joined by none other than the father of the free software movement, Richard Stallman. However, I have to once again question how free and open are these free and open source software advocates? Is the movement and FOSS open to all (except Microsoft, Oracle or anyone else the Open Rights Group, Richard Stallman or any other number of FOSS groups or figures so deems at some point in the future)? Sounds like the kind of control and red tape we refer to when we warn vendors against undoing the benefits of open source, particularly openness, flexibility and transparency.

Funny how we were contemplating similar concerns about MySQL’s open source fate when Sun acquired MySQL for $1 billion in 2008. Sun ended up having minimal impact on the open source nature of MySQL, thanks in part to the force and direction of the MySQL community.

Still, would we expect Oracle to do any worse than Sun in terms of supporting integration and continued progress for their new product? I think we would actually expect quite a bit more from Oracle, which has illustrated its ability to both execute and integrate numerous times in the past.

The argument to keep Oracle from acquiring MySQL is reminiscent of the loud calls to keep Microsoft from getting some of its software licenses approved as open source by the OSI. It also has parallels to the restriction of open source software from military and weapons uses. Although it might not be tasteful to all supporters of free and open source software, their very mantras and doctrines dictate their software and communites are open to all equally. Anything less is a contradiction of the core ideology of free and open source software.

We’ve expressed our own concerns about Oracle taking over MySQL, including the idea that Oracle may have a somewhat limited appreciation of open source community. However, in the end, and with reinforcement at last week’s Oracle OpenWorld, the company appears to realize the value and purpose of MySQL and its community. Whatever Oracle does not know or understand about MySQL, its community, its customers or open source, the vendor will most likely learn quickly if history is precedent.

Code scanning and management vendor Black Duck reports the GNU General Public License v2 (GPLv2) now dipping below 50% share of open source software. While we already knew that GPLv2 was somewhat in decline from its far greater share of open source code over the last 5-10 years, it is useful to know what pool of code we’re talking about. We must also remember that while GPLv2 may not be as dominant as it once was and that other licenses, particularly GPLv3, are quickly gaining share, GPLv2 is still quite relevant to enterprise open source software, is used in a variety of newer and popular applications across the enterprise stack and is likely to remain in the top 10 licenses for a long time.

Regarding GPLv2 and Black Duck’s findings, some folks are rightly asking what code and how much of it are we considering where GPLv2 accounts for half or less of the software? Well, the short answer is, I believe, hosted open source code. Black Duck draws its figures from open source software in its Software Knowledgebase, which draws on other repositories and includes more than 185,000 software projects.

For our recent report, The Myth of Open Source License Proliferation, we thought it would be useful to look at open source license representation in another cross-section of software that was more reflective of code in use. Thus, with the help of Airius Internet Solutions, we considered the open source licenses of software that was the subject of vulnerability reporting (arguably, a decent measure of the software’s use). What we found, somewhat surprisingly, was that the list of most popular open source licenses among hosted open source software was very consistent with the list of most popular open source licenses among open source software in use. Both lists have the GPLv2, GPLv3, Artistic, BSD and Apache licenses in their top six, albeit in somewhat different orders. The percentages for different licenses, however, were quite different, giving more share to other licenses further down the list in the case of software in use.

At the time of our report, May 2009, the GPLv2 license accounted for 50.49% of all projects documented in Black Duck’s Software Knowledgebase, which is more than 185,000 projects. During the same time frame, Airius reported that the GPLv2 license accounted for 36.34% of software subject to vulnerability reporting and the Airius Risk Report, which consists of more than 139,000 projects reviewed. GPLv2 still tops both lists for now, but it is clear that GPLv3 is rising fast. Black Duck reported in June that GPLv3 had moved past the Mozilla, MIT and Apache licenses to the fifth spot on its list with 5.10%, behind BSD. Our research with Airius indicated that GPLv3 was number two on the list of projects reviewed with 18.5% as of June 15, 2009. This reinforces the idea that GPLv2 is being used less while GPLv3 is gaining more use. Nevertheless, it is important to remember GPLv2 is still being used in many projects and products beyond Linux and MySQL (which are, nevertheless, among prominent uses of the GPLv2). Examples range from applications such as Jaspersoft BI to systems management software such as Likewise, to cloud computing pieces such as the Puppet server automation software.

We’ll be delving into these and related issues with a lively, live debate on OSS licenses coming this Monday, August 31. Here Matt Assay argue for GPL, Eclipse Foundation’s Mike Milinkovich pull for EPL and Coverity’s David Maxwell for the BSD as they spar over which license is best. The audience and a panel including yours truly will judge who wins, and we’ll post our thoughts here and elsewhere for others to weigh in as well. Please