Re: WIP: SP-GiST, Space-Partitioned GiST

This is updates SP-GiST patch, which fixed one bug and 
replaced test to the locale independent one.

On Wed, 31 Aug 2011, Oleg Bartunov wrote:

> Hi there,
>
> attached is our WIP-patch for 9.2 development source tree, which provides
> implementation of SP-GiST (prototype was presented at PGCon-2011, see
> http://www.pgcon.org/2011/schedule/events/309.en.html and presentation
> for details) as a core feature.  Main differences from prototype version:
>
> 1. Now it's part of pg core, not contrib module
> 2. It provides more operations for quadtree and suffix tree
> 3. It uses clustering algorithm of nodes on disk and has much better
> utilization of disk space. Fillfactor is supported
> 4. Some corner cases were eliminated
> 5. It provides support for concurency and recovery (inserts are
> logged, supports for deletes, and log replay will be added really
> soon)
>
> So, now code contains almost all possible overhead of production code
> and we ask hackers to test performance on real data sets. We expect
> the same performance for random data (since almost no overlaps) and
> much better performance on real-life data, plus much better index
> creation time. Also, we appreciate your comments and suggestions about
> API.
>
>     Regards,
>         Oleg
> _____________________________________________________________
> Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
> Sternberg Astronomical Institute, Moscow University, Russia
> Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
> phone: +007(495)939-16-83, +007(495)939-23-83
    Regards,        Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83