From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
---|---|
To: | Merlin Moncure <mmoncure(at)gmail(dot)com> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, Dimitri Fontaine <dfontaine(at)hi-media(dot)com>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Compression Library and Usages |
Date: | 2010-01-12 09:32:37 |
Message-ID: | 1263288757.14170.5.camel@fsopti579.F-Secure.com |
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Thread: | |
Lists: | pgsql-hackers |
On mån, 2010-01-11 at 22:39 -0500, Merlin Moncure wrote:
> On Mon, Jan 11, 2010 at 7:54 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> > Merlin Moncure <mmoncure(at)gmail(dot)com> writes:
> >> plus, it looks like that most of the patents have either expired, or
> >> are about to expire. lzo is used all over the place, including the
> >> linux kernel...i think the burden of proof rests with anyone claiming
> >> there are patent problems, not the other way around. lzo is also gpl
> >> so we can't use it :D. regarding fastlz and patents, who knows? I'm
> >> curious...does anyone know of a case where a high profile open source
> >> project was found to be violating a patent?
> >
> > You have got that 100% backwards. We are not going to bet the survival
> > of the Postgres project on whether we can get away with violating
> > somebody's patent.
>
> I was only talking about the specific case of lzo, which is used
> absolutely everywhere (not that this means anything but...).
I think this compression business warrants a FAQ entry by now:
N a) Why don't you use compression library X?
Many compression libraries have an unclear patent situation, and the
potential benefits using them do not appear to outweigh that risk.
N b) But LZO cannot possibly have any relevant patents on it because a
lot of open-source software uses it.
The LZO library is licensed under the GPL, so we can't use it.
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