Re: [postgis-devel] CLUSTER in 8.3 on GIST indexes break - Mailing list pgsql-hackers

From Robert W. Burgholzer
Subject Re: [postgis-devel] CLUSTER in 8.3 on GIST indexes break
Date
Msg-id 1228490755.493948033fd90@webmail.vt.edu
Whole thread Raw
In response to Re: [postgis-devel] CLUSTER in 8.3 on GIST indexes break  (Mark Cave-Ayland <mark.cave-ayland@siriusit.co.uk>)
List pgsql-hackers
FWIW,
I have experienced some oddities in performing SELECT statements after
restarting on an 8.2 system, whereby I occasionally would get a ton of
duplicate records when I would do a select statement (my assumption is that
they are deleted tuples being returned).  If I executed the same select
statement again, I would get the correct number of records.

Thanks for exploring this issue ladies and gents.

r.b.


Quoting Mark Cave-Ayland <mark.cave-ayland@siriusit.co.uk>:

> Gregory Stark wrote:
>
> > Uhm. That rather sucks. I was able to reproduce it too.
> >
> > It seems to happen after I pause for a bit, and not when I run the script
> in
> > fast succession.
>
> Thanks for the verification Greg. I'm wondering if the GiST part is a
> red herring, and in fact it is related to some bizarre interaction
> between CLUSTER/VACUUM/autovacuum?
>
>
> ATB,
>
> Mark.
>
> --
> Mark Cave-Ayland
> Sirius Corporation - The Open Source Experts
> http://www.siriusit.co.uk
> T: +44 870 608 0063
> _______________________________________________
> postgis-devel mailing list
> postgis-devel@postgis.refractions.net
> http://postgis.refractions.net/mailman/listinfo/postgis-devel
>


--
Robert W. Burgholzer
--
Finding the occasional straw of truth awash in a great ocean of confusion and
bamboozle requires intelligence, vigilance, dedication and courage.  But if we
don't practice these tough habits of thought, we cannot hope to solve the truly
serious problems that face us -- and we risk becoming a nation of suckers, up
for grabs by the next charlatan who comes along.
-- Carl Sagan, "The Fine Art of Baloney Detection," Parade, February 1, 1987

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