[Monetdb-developers] trying to use monetdb pathfinder
Stefan.Manegold at cwi.nl
Thu Feb 8 22:20:14 CET 2007
On Thu, Feb 08, 2007 at 10:07:13PM +0100, Arjen P. de Vries wrote:
> Another question - regarding the read-write vs. read-only mode:
> * Can I only turn on read-write mode by giving a % of free pages to
AFAIK, read-write mode is only activated by loading/shredding documents (via
pf:add-doc() in XQuery or shred_doc() in MIL) with a fre % > 0.
> * What is the recommended %; and, does it hurt to give 0% if I do
I cannot give any qualified recoomendation about the "optimal" %, yet(?);
most probably depends on your expected workload;
10% seems a "nice" value to start with...
0% measn read-only; hence (AFAIK) also no appends are allowed/possible.
> >> It is not mentioned on the web, and I cannot even find a test using
> >> pf:add-doc... maybe I am looking in the wrong place for documentation?
> >more documentation is pending --- please bear with us, also we have only
> >per day (25 is we skip lunch) ...
> I know I know, but still...
> maybe to document first, and to deprecate second would be a better
> order of processing things over (no matter how limited) time!
As said, shred_doc() in MIL does still work (and should be functionally
equivalent to pf:add-doc() in XQuery --- AFAIK, they use the very same
shred_doc() is "deprecated" as we plan to encourage users to stay in the
XQuery domain, only, also for document management (instead of falling back
to MIL for that) --- since W3C has not (yet?) specified any "real" document
management functionality in XQuery (except from say fn:doc() and
fn:collection()) we invented our own pf:add-doc() and pf:del-doc().
(shred_doc() is btw. documented see `help("shred_doc()");` and/or my
previous posting on this thread.)
I agree that we should add the documentation for our XQuery document
management extensions ASAP ...
(but documenting first and implementing then is also no good option...)
> CWI, room C1.16 Centre for Mathematics and Computer Science
> Kruislaan 413 Email: Arjen.de.Vries at cwi.nl
> 1098 SJ Amsterdam tel: +31-(0)20-5924306
> The Netherlands fax: +31-(0)20-5924312
> ===================== http://www.cwi.nl/~arjen/ ====================
| Dr. Stefan Manegold | mailto:Stefan.Manegold at cwi.nl |
| CWI, P.O.Box 94079 | http://www.cwi.nl/~manegold/ |
| 1090 GB Amsterdam | Tel.: +31 (20) 592-4212 |
| The Netherlands | Fax : +31 (20) 592-4312 |
More information about the developers-list