Robert Haas robertmh...@gmail.com writes:
On Thu, Apr 2, 2015 at 3:59 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Perhaps the difference has to do with whether pg_am's pg_class tuple is
on a page that hasn't got enough room for a HOT update? But I definitely
tried it several times and consistently
Robert Haas robertmh...@gmail.com writes:
On Thu, Apr 2, 2015 at 2:55 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Actually, now that I think it through, the could not open relation
error is pretty odd in itself. If we are trying to open pg_am using
a stale catalog snapshot, it seems like we ought
On Wed, Apr 1, 2015 at 7:05 PM, Tom Lane t...@sss.pgh.pa.us wrote:
I've been able to reproduce this. The triggering event seems to be that
the VACUUM FULL pg_am in vacuum.sql has to happen while another backend
is starting up. With a ten-second delay inserted at the bottom of
Robert Haas robertmh...@gmail.com writes:
On Thu, Apr 2, 2015 at 2:40 PM, Tom Lane t...@sss.pgh.pa.us wrote:
However, I'm having second thoughts about whether we've fully diagnosed
this. Three out of the four failures we've seen in the buildfarm reported
cache lookup failed for access method
On Thu, Apr 2, 2015 at 2:55 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Robert Haas robertmh...@gmail.com writes:
On Thu, Apr 2, 2015 at 2:40 PM, Tom Lane t...@sss.pgh.pa.us wrote:
However, I'm having second thoughts about whether we've fully diagnosed
this. Three out of the four failures we've
Robert Haas robertmh...@gmail.com writes:
On Wed, Apr 1, 2015 at 7:05 PM, Tom Lane t...@sss.pgh.pa.us wrote:
I've not fully tracked it down, but I think that the blame falls on the
MVCC-snapshots-for-catalog-scans patch; it appears that it's trying to
read pg_am's pg_class entry with a
Robert Haas robertmh...@gmail.com writes:
On Thu, Apr 2, 2015 at 12:54 PM, Tom Lane t...@sss.pgh.pa.us wrote:
It looks to me like an appropriate fix would be as attached; thoughts?
Hmm, that fix doesn't reach as far as what I did. My proposal would
regard a catalog snapshot as immediately
On Thu, Apr 2, 2015 at 2:40 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Robert Haas robertmh...@gmail.com writes:
On Thu, Apr 2, 2015 at 12:54 PM, Tom Lane t...@sss.pgh.pa.us wrote:
It looks to me like an appropriate fix would be as attached; thoughts?
Hmm, that fix doesn't reach as far as what I
On Thu, Apr 2, 2015 at 12:54 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Robert Haas robertmh...@gmail.com writes:
On Wed, Apr 1, 2015 at 7:05 PM, Tom Lane t...@sss.pgh.pa.us wrote:
I've not fully tracked it down, but I think that the blame falls on the
MVCC-snapshots-for-catalog-scans patch; it
On Thu, Apr 2, 2015 at 3:59 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Robert Haas robertmh...@gmail.com writes:
On Thu, Apr 2, 2015 at 2:55 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Actually, now that I think it through, the could not open relation
error is pretty odd in itself. If we are trying to
I wrote:
Observe these recent buildfarm failures:
http://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=muledt=2015-03-21%2000%3A30%3A02
http://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=guaibasaurusdt=2015-03-23%2004%3A17%3A01
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