Re: [HACKERS] [postgis-devel] CLUSTER in 8.3 on GIST indexes break

2008-12-06 Thread Robert W. Burgholzer
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

Re: [HACKERS] [postgis-devel] CLUSTER in 8.3 on GIST indexes break

2008-12-05 Thread Mark Cave-Ayland
Hi Kevin, Yeah I see exactly the same problem on 8.3.5 too, although it seems random - what seems to happen is that sometimes the contents of the temporary table disappears. I've attached a test script which causes the error *some* of the time, although it tends to occur more often just

Re: [HACKERS] [postgis-devel] CLUSTER in 8.3 on GIST indexes break

2008-12-05 Thread Gregory Stark
Mark Cave-Ayland [EMAIL PROTECTED] writes: So in other words, the contents of the temporary table has just disappeared :( 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. -- Gregory Stark

Re: [HACKERS] [postgis-devel] CLUSTER in 8.3 on GIST indexes break

2008-12-05 Thread Mark Cave-Ayland
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

Re: [HACKERS] [postgis-devel] CLUSTER in 8.3 on GIST indexes break

2008-12-05 Thread Gregory Stark
Robert W. Burgholzer [EMAIL PROTECTED] writes: 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

Re: [HACKERS] [postgis-devel] CLUSTER in 8.3 on GIST indexes break

2008-12-04 Thread Kevin Neufeld
Mark Cave-Ayland wrote: On Thu, 2008-12-04 at 13:51 -0800, Kevin Neufeld wrote: Wow, that's bad. I just updated to PostgreSQL 8.3.5 from 8.3.3 and I now get the same thing. test=# create temp table tmp as select st_makepoint(random(), random()) as the_geom from generate_series(1, 1);