I'm proposing this now as a possible GSoC project:
In 1-byte character encodings (i.e. not UTF-8), SUBSTR() is optimised
to allow seeking straight to the exact slice when retrieving a large
toasted value. This reduces I/O considerably when you have large
toasted values since it is an O(1) action
Stephen Frost sfr...@snowman.net writes:
* Marko Kreen (mark...@gmail.com) wrote:
On Sat, May 04, 2013 at 10:57:44PM +0200, Dimitri Fontaine wrote:
Other than adminpack, I know of PGQ installing their objects in
pg_catalog. They only began doing that when switching to the CREATE
EXTENSION
On 05/14/2013 10:05 AM, Simon Riggs wrote:
I'm proposing this now as a possible GSoC project:
In 1-byte character encodings (i.e. not UTF-8), SUBSTR() is optimised
to allow seeking straight to the exact slice when retrieving a large
toasted value. This reduces I/O considerably when you have
On Tue, May 14, 2013 at 5:27 AM, Peter Eisentraut pete...@gmx.net wrote:
On Tue, 2013-05-14 at 04:12 +0300, Marti Raudsepp wrote:
It's caused by this common pattern in extension makefiles:
DATA = $(wildcard sql/*--*.sql) sql/$(EXTENSION)--$(EXTVERSION).sql
What is the point of this? Why have
On Tue, May 14, 2013 at 09:29:38AM +0200, Dimitri Fontaine wrote:
Stephen Frost sfr...@snowman.net writes:
* Marko Kreen (mark...@gmail.com) wrote:
On Sat, May 04, 2013 at 10:57:44PM +0200, Dimitri Fontaine wrote:
Other than adminpack, I know of PGQ installing their objects in
On Sunday, May 12, 2013 4:53 AM Robert Haas wrote:
On Sat, May 11, 2013 at 12:27 PM, Tom Lane t...@sss.pgh.pa.us wrote:
By the time you've got an expression tree, the problem is mostly
solved,
at least so far as parser extension is concerned.
Right.
More years ago than I care to
* Dimitri Fontaine (dimi...@2ndquadrant.fr) wrote:
I'm not sure I agree with that view about pg_catalog. Sometimes we talk
about moving some parts of core in pre-installed extensions instead, and
if we do that we will want those extensions to install themselves into
pg_catalog.
For my part,
On 2013-05-13 21:04:06 -0400, Stephen Frost wrote:
* Marko Kreen (mark...@gmail.com) wrote:
On Sat, May 04, 2013 at 10:57:44PM +0200, Dimitri Fontaine wrote:
Other than adminpack, I know of PGQ installing their objects in
pg_catalog. They only began doing that when switching to the CREATE
Le mardi 14 mai 2013 10:17:13, Marti Raudsepp a écrit :
On Tue, May 14, 2013 at 5:27 AM, Peter Eisentraut pete...@gmx.net wrote:
On Tue, 2013-05-14 at 04:12 +0300, Marti Raudsepp wrote:
It's caused by this common pattern in extension makefiles:
DATA = $(wildcard sql/*--*.sql)
Marti Raudsepp ma...@juffo.org writes:
all: sql/$(EXTENSION)--$(EXTVERSION).sql
sql/$(EXTENSION)--$(EXTVERSION).sql: sql/$(EXTENSION).sql
cp $ $@
That's a recipe for problems. Each time I meet with such a construct in
an extension's Makefile I propose an hard coded alternative. We're
On 5/13/13 10:58 PM, Andrew Dunstan wrote:
I'm not sure why the wildcard is a bad idea - don't we want any present
update sql files to be installed?
Generally, wildcards in makefiles are a bad idea because you will then
not discover any broken tarballs and checkouts. The users will just
Today we have seen this on our testing database instance:
ERROR: could not open file base/16416/291498116.3 (target block 431006):
No such file or directory
That database get's created by rsyncing the LVM snapshot of the standby,
which is a readonly backup of proddb
using streaming replication.
On 5/14/13 4:17 AM, Marti Raudsepp wrote:
On Tue, May 14, 2013 at 5:27 AM, Peter Eisentraut pete...@gmx.net wrote:
On Tue, 2013-05-14 at 04:12 +0300, Marti Raudsepp wrote:
It's caused by this common pattern in extension makefiles:
DATA = $(wildcard sql/*--*.sql)
On 5/14/13 7:50 AM, Dimitri Fontaine wrote:
Marti Raudsepp ma...@juffo.org writes:
all: sql/$(EXTENSION)--$(EXTVERSION).sql
sql/$(EXTENSION)--$(EXTVERSION).sql: sql/$(EXTENSION).sql
cp $ $@
That's a recipe for problems. Each time I meet with such a construct in
an extension's
HI.
Thanks, Heikki, for the answer on google-melange. For some reason i didn't
receive email notification, so I saw this answer only today.
Do you have access to a server you can use to perform those tests? (...)
Yes, i have. I am maintaining MPI cluster in my university, so it is not a
* Andres Freund (and...@2ndquadrant.com) wrote:
I don't disagree, but how is that relevant for fixing the issue at hand?
We still need to fix restores that currently target the wrong schema in
a backward compatible manner?
On this, I agree w/ Tom that we should put that check back into place-
On Tue, May 14, 2013 at 12:51 AM, Michael Paquier
michael.paqu...@gmail.com wrote:
I'm not sure what the specific answer here should look like. Simply
having a
CREATE FUNCTION ... PARALLEL_IS_FINE flag is not entirely satisfying,
because
the rules are liable to loosen over time.
Having a
On Tue, May 14, 2013 at 4:30 PM, Stas Kelvich stanc...@gmail.com wrote:
* Don't do cube with type support
Eventually, there is different ways of reducing R-Tree size. For
example we can store relative coordinates with dynamic size of MBR (VRMBR),
instead of absolute coordinates with
On 05/14/2013 07:59 AM, Peter Eisentraut wrote:
On 5/14/13 4:17 AM, Marti Raudsepp wrote:
On Tue, May 14, 2013 at 5:27 AM, Peter Eisentraut pete...@gmx.net wrote:
On Tue, 2013-05-14 at 04:12 +0300, Marti Raudsepp wrote:
It's caused by this common pattern in extension makefiles:
DATA =
On May 14, 2013, at 4:53 PM, Alexander Korotkov wrote:
Sounds promising. Did you examine how this technique can fit into GiST? In
current GiST interface methods don't have access to parent entries.
No, i didn't examine it yet. Anyway in this technique lots of changes should be
performed to
On 14.05.2013 14:57, Benedikt Grundmann wrote:
Today we have seen this on our testing database instance:
ERROR: could not open file base/16416/291498116.3 (target block 431006):
No such file or directory
That database get's created by rsyncing the LVM snapshot of the standby,
which is a
As discussed and concluded in mail thread
(http://www.postgresql.org/message-id/006f01ce34f0$d6fa8220$84ef8660$@kapila
@huawei.com), for moving unused buffer's to freelist end,
I having implemented the idea and taken some performance data.
In the attached patch, bgwriter/checkpointer
It's on the production database and the streaming replica. But not on the
snapshot.
production
-rw--- 1 postgres postgres 312778752 May 13 21:28
/database/postgres/base/16416/291498116.3
streaming replica
-rw--- 1 postgres postgres 312778752 May 13 23:50
On Mon, May 13, 2013 at 4:31 PM, Dmitry Koterov dmi...@koterov.ru wrote:
Could you please provide a bit more detailed explanation on how it works?
And how could postgres write at the middle of archiving files during an
active pg_start_backup? if it could, here might be a case when a part of
On Mon, May 13, 2013 at 07:55:16PM +0100, Simon Riggs wrote:
On 13 May 2013 15:28, Noah Misch n...@leadboat.com wrote:
The heavyweight locking mechanism will need to be aware of the association
between the master and its workers.
Not sure I can see why that would be true.
ISTM that
Le mardi 14 mai 2013 10:17:13, Marti Raudsepp a écrit :
On Tue, May 14, 2013 at 5:27 AM, Peter Eisentraut pete...@gmx.net wrote:
On Tue, 2013-05-14 at 04:12 +0300, Marti Raudsepp wrote:
It's caused by this common pattern in extension makefiles:
DATA = $(wildcard sql/*--*.sql)
On Mon, May 13, 2013 at 09:52:43PM +0200, Kohei KaiGai wrote:
2013/5/13 Noah Misch n...@leadboat.com
The choice of whether to parallelize can probably be made a manner similar
to
the choice to do an external sort: the planner guesses the outcome for
costing
purposes, but the actual
On Tue, May 14, 2013 at 01:51:42PM +0900, Michael Paquier wrote:
On Mon, May 13, 2013 at 11:28 PM, Noah Misch n...@leadboat.com wrote:
* Identifying Parallel-Compatible Functions
Not all functions can reasonably run on a worker backend. We should not
presume that a VOLATILE function
On Tue, May 14, 2013 at 11:50 AM, Noah Misch n...@leadboat.com wrote:
On Mon, May 13, 2013 at 09:52:43PM +0200, Kohei KaiGai wrote:
2013/5/13 Noah Misch n...@leadboat.com
The choice of whether to parallelize can probably be made a manner similar
to
the choice to do an external sort: the
Hello,
Is it right that it is only in the case a password prompt is needed
that a new connection is created after dropping the just-failed
connection?
I created a patch which enables it to use the existing connection in
such a case (unlike what we currently do). It modifies
connectDBComplete()
On 14.05.2013 16:48, Benedikt Grundmann wrote:
It's on the production database and the streaming replica. But not on the
snapshot.
So, the LVM snapshot didn't work correctly?
- Heikki
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your
Sometimes, the psql startup hangs when it cannot resolve or connect to a
host. Intuitively, I would like to press Ctrl+C and correct the
connection string or investigate. But that doesn't work because Ctrl+C
is already bound to the query cancel handler by that time.
It seems to me that there is
On 14.05.2013 05:34, Peter Eisentraut wrote:
In the last two years, the first commit fest started in June, which is
about a month from now. If we are going to do that again, we should
clarify that as soon as possible. And if we are not, then we should
also clarify that, because some people are
I submitted essentially this same patch over a year ago and Tom vetoed
it: http://www.postgresql.org/message-id/3741.1325731...@sss.pgh.pa.us
The thread moved to -hackers at some point and I made some further
enhancements:
That's one possible explanation. It's worth noting that we haven't seen
this before moving to streaming rep first and we have been using that
method for a long time.
On Tue, May 14, 2013 at 11:34 AM, Heikki Linnakangas
hlinnakan...@vmware.com wrote:
On 14.05.2013 16:48, Benedikt Grundmann
PostgreSQL 9.3 Beta 1 Liberado
=
La primera versión beta de PostgreSQL 9.3, la nueva versión de la
mejor base de datos de código abierto del mundo, ahora está
disponible. Este beta
contiene vistas previas de todas las características que estarán
disponibles en la
versión
2013/5/14 Jaime Casanova ja...@2ndquadrant.com:
PostgreSQL 9.3 Beta 1 Liberado
=
Sorry, i was sending the announcement to a Spanish list but seems i
choose the wrong one in the email list.
--
Jaime Casanova www.2ndQuadrant.com
Professional PostgreSQL: Soporte
On 14 May 2013 08:05, Simon Riggs si...@2ndquadrant.com wrote:
I'm proposing this now as a possible GSoC project:
Unfortunately the deadline for project submissions for students was
3rd May. If this isn't worked on before next year, it can of course
be put forward as an idea for GSoC 2014.
--
On 14 May 2013 18:21, Thom Brown t...@linux.com wrote:
On 14 May 2013 08:05, Simon Riggs si...@2ndquadrant.com wrote:
I'm proposing this now as a possible GSoC project:
Unfortunately the deadline for project submissions for students was
3rd May. If this isn't worked on before next year, it
On 05/13/2013 08:13 PM, Peter Eisentraut wrote:
On Mon, 2013-05-13 at 22:38 -0400, Tom Lane wrote:
Peter Eisentraut pete...@gmx.net writes:
In the last two years, the first commit fest started in June, which is
about a month from now. If we are going to do that again, we should
clarify that
Attached patch contains feature I've implemented for myself, to make
working with huge datasets easier.
I work with large datasets (1E8 - 1E9 records), and the nature of my
work is such that I must dig something out of the data on ad-hoc
basis. I spend a lot of time with psql.
Sometimes a query
Hackers,
I'd like to add the following todo items to the TODO list:
PL/Python:
* add support for anyelement and anyarray to PL/Python
* add support for VARIADIC ANY to PL/Python
PL/Perl:
* add support for anyelement and anyarray to PL/Perl
* add support for VARIADIC ANY to PL/Perl
The reason
I'm proposing this now as a possible GSoC project; I don't propose to
actively work on it myself.
The deadline for submitting GSOC projects (by students) was a week ago.
So is this a project suggestion for next year ...?
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com
--
On 14.05.2013 21:36, Josh Berkus wrote:
I'm proposing this now as a possible GSoC project; I don't propose to
actively work on it myself.
The deadline for submitting GSOC projects (by students) was a week ago.
So is this a project suggestion for next year ...?
I've been thinking, we
In the first CF for 9.4 I plan to submit a patch to allow
transactional REFRESH of a materialized view using differential
update. Essentially I expect this to be the equivalent of running
the query specified for the view and saving the results into a
temporary table, and then doing DELETE and
On 14 May 2013 19:47, Heikki Linnakangas hlinnakan...@vmware.com wrote:
On 14.05.2013 21:36, Josh Berkus wrote:
I'm proposing this now as a possible GSoC project; I don't propose to
actively work on it myself.
The deadline for submitting GSOC projects (by students) was a week ago.
So is
On Tue, May 14, 2013 at 11:47 AM, Heikki Linnakangas
hlinnakan...@vmware.com wrote:
I've been thinking, we should already start collecting ideas for next year,
and collect them throughout the year. I know I come up with some ideas every
now and then, but when it's time for another GSoC, I can't
Hello
we like to use psql in combination with bash - just like postgresql driver.
Actually there is no simple possibility (from command line) to set
application_name. We would to use different name than psql - for
example splunk, ...
I tested PGAPPNAME, but it doesn't work.
so my propose:
1)
On 14 May 2013 19:51, Kevin Grittner kgri...@ymail.com wrote:
In the first CF for 9.4 I plan to submit a patch to allow
transactional REFRESH of a materialized view using differential
update. Essentially I expect this to be the equivalent of running
the query specified for the view and saving
On 14 May 2013 20:04, Peter Geoghegan p...@heroku.com wrote:
On Tue, May 14, 2013 at 11:47 AM, Heikki Linnakangas
hlinnakan...@vmware.com wrote:
I've been thinking, we should already start collecting ideas for next year,
and collect them throughout the year. I know I come up with some ideas
On 5/14/13 9:42 AM, Amit Kapila wrote:
In the attached patch, bgwriter/checkpointer moves unused (usage_count
=0 refcount = 0) buffer’s to end of freelist. I have implemented a
new API StrategyMoveBufferToFreeListEnd() to
There's a comment in the new function:
It is possible that we are told
On Tue, May 14, 2013 21:04, Pavel Stehule wrote:
Hello
we like to use psql in combination with bash - just like postgresql driver.
Actually there is no simple possibility (from command line) to set
application_name. We would to use different name than psql - for
example splunk, ...
I
2013/5/14 Erik Rijkers e...@xs4all.nl:
On Tue, May 14, 2013 21:04, Pavel Stehule wrote:
Hello
we like to use psql in combination with bash - just like postgresql driver.
Actually there is no simple possibility (from command line) to set
application_name. We would to use different name than
On Tue, May 14, 2013 at 9:25 PM, Pavel Stehule pavel.steh...@gmail.com wrote:
2013/5/14 Erik Rijkers e...@xs4all.nl:
On Tue, May 14, 2013 21:04, Pavel Stehule wrote:
Hello
we like to use psql in combination with bash - just like postgresql driver.
Actually there is no simple possibility
2013/5/14 Magnus Hagander mag...@hagander.net:
psql in connection string mode
Hi Magnus, can me send some link?
Thank you
Pavel
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To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
On Tue, May 14, 2013 at 9:36 PM, Pavel Stehule pavel.steh...@gmail.com wrote:
2013/5/14 Magnus Hagander mag...@hagander.net:
psql in connection string mode
Hi Magnus, can me send some link?
http://www.postgresql.org/docs/9.2/static/app-psql.html
If this parameter contains an = sign or starts
2013/5/14 Magnus Hagander mag...@hagander.net:
On Tue, May 14, 2013 at 9:36 PM, Pavel Stehule pavel.steh...@gmail.com
wrote:
2013/5/14 Magnus Hagander mag...@hagander.net:
psql in connection string mode
Hi Magnus, can me send some link?
On Tue, May 14, 2013 at 2:59 PM, Peter Eisentraut pete...@gmx.net wrote:
Perhaps, but fixing the extensions is not a solution at this point. A
large number of extensions use this exact code (it comes from David
Wheeler's template AFAIK).
So far, the number is still less than the number of
In surveying the literature on $subject, I find that most of the
theoretical work related to how to incrementally update
materialized views based on the matview declaration was published
between 1988 and 1993. The best paper I have been able to find on
the topic was published in ACM SIGMOD in
2013/5/14 Thom Brown t...@linux.com:
On 14 May 2013 19:51, Kevin Grittner kgri...@ymail.com wrote:
In the first CF for 9.4 I plan to submit a patch to allow
transactional REFRESH of a materialized view using differential
update. Essentially I expect this to be the equivalent of running
the
On 14 May 2013 20:55, Pavel Stehule pavel.steh...@gmail.com wrote:
2013/5/14 Thom Brown t...@linux.com:
On 14 May 2013 19:51, Kevin Grittner kgri...@ymail.com wrote:
In the first CF for 9.4 I plan to submit a patch to allow
transactional REFRESH of a materialized view using differential
Thom Brown t...@linux.com wrote:
On 14 May 2013 19:51, Kevin Grittner kgri...@ymail.com wrote:
In the first CF for 9.4 I plan to submit a patch to allow
transactional REFRESH of a materialized view using differential
update. Essentially I expect this to be the equivalent of running
the query
On 14 May 2013 21:04, Kevin Grittner kgri...@ymail.com wrote:
Thom Brown t...@linux.com wrote:
On 14 May 2013 19:51, Kevin Grittner kgri...@ymail.com wrote:
In the first CF for 9.4 I plan to submit a patch to allow
transactional REFRESH of a materialized view using differential
update.
On Mon, May 13, 2013 at 11:13 PM, Peter Eisentraut pete...@gmx.net wrote:
On Mon, 2013-05-13 at 22:38 -0400, Tom Lane wrote:
Peter Eisentraut pete...@gmx.net writes:
In the last two years, the first commit fest started in June, which is
about a month from now. If we are going to do that
I think my previous message wasn't clear enough. I do *NOT* think that LVM
snapshot is the culprit.
However I cannot discount it as one of the possibilities. But I have no
evidence in either /var/log/messages or in dmesg that the LVM snapshot went
into a bad state AND we have been using this
Marti Raudsepp ma...@juffo.org writes:
I did a quick and dirty survey of extensions on PGXN and found that
the install change causes problems for (at least) 22% of extensions
there. I think it's well worth the time to implement a workaround,
rather than hassle extension writers.
What's really
On Tue, May 14, 2013 at 11:59 PM, Noah Misch n...@leadboat.com wrote:
On Tue, May 14, 2013 at 01:51:42PM +0900, Michael Paquier wrote:
On Mon, May 13, 2013 at 11:28 PM, Noah Misch n...@leadboat.com wrote:
* Identifying Parallel-Compatible Functions
Not all functions can reasonably
On 24/02/13 10:51, Mark Kirkwood wrote:
On 24/02/13 10:12, Stefan Andreatta wrote:
On 02/23/2013 09:30 PM, Jeff Janes wrote:
Moved discussion from General To Hackers.
On Sat, Feb 23, 2013 at 10:41 AM, Stefan Andreatta
s.andrea...@synedra.com mailto:s.andrea...@synedra.com wrote:
On
Hello,
Since, as of 9.3, there are significant changes related to shared
memory, should we change the description in
src/backend/port/sysv_shmem.c which is currently following:
*-
*
* sysv_shmem.c
*Implement
* Tom Lane (t...@sss.pgh.pa.us) wrote:
I still think we should revert 9db7ccae2000524b72a4052352cbb5407fb53b02.
The argument that the system-provided program might be faster carries
very little weight for me --- make install is fast enough already.
It's not worth making a bunch of extension
On Mon, May 13, 2013 at 9:54 PM, Jon Nelson jnelson+pg...@jamponi.net wrote:
Pertinent to another thread titled
[HACKERS] corrupt pages detected by enabling checksums
I hope to explore the possibility of using fallocate (or
posix_fallocate) for new WAL file creation.
Most modern Linux
On Wednesday, May 15, 2013 12:44 AM Greg Smith wrote:
On 5/14/13 9:42 AM, Amit Kapila wrote:
In the attached patch, bgwriter/checkpointer moves unused
(usage_count
=0 refcount = 0) buffer's to end of freelist. I have implemented a
new API StrategyMoveBufferToFreeListEnd() to
There's a
On 05/13/2013 07:10 PM, Robert Haas wrote:
On Mon, May 13, 2013 at 10:57 AM, Tom Lane t...@sss.pgh.pa.us wrote:
This approach seems to me to be likely to guarantee that the startup
overhead for any parallel sort is so large that only fantastically
enormous sorts will come out ahead.
I think
Hannu Krosing ha...@krosing.net writes:
Has anybody looked into making syscache MVCC compliant ?
This is the wrong statement of the question.
The right statement is how would you like backend A to be updating
table T in compliance with a view of table T's schema that is obsolete
because of
On 05/15/2013 07:30 AM, Tom Lane wrote:
Hannu Krosing ha...@krosing.net writes:
Has anybody looked into making syscache MVCC compliant ?
This is the wrong statement of the question.
The right statement is how would you like backend A to be updating
table T in compliance with a view of table
On Tuesday, May 14, 2013 7:19 PM Benedikt Grundmann wrote:
It's on the production database and the streaming replica. But not on the
snapshot.
production
-rw--- 1 postgres postgres 312778752 May 13 21:28
/database/postgres/base/16416/291498116.3
streaming replica
-rw--- 1 postgres
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