On Thu, Mar 29, 2012 at 10:55 PM, Dobes Vandermeer dob...@gmail.com wrote:
Virtual hosts. Same port.
In that case, the frontend would not be tied to a specific PostgreSQL
server, then? I think initially this might complicate things a bit, and you
could solve it by putting an HTTP proxy in
Robert Haas robertmh...@gmail.com writes:
I'm thinking of things like extension whitelisting. When some
unprivileged user says CREATE EXTENSION harmless, and harmless is
marked as superuser-only, we might like to have a hook that gets
called *at permissions-checking time* and gets to say, oh,
Hello
2012/3/28 Heikki Linnakangas heikki.linnakan...@enterprisedb.com:
Ok, seems that the API issue is settled, so I'm now looking at the code
actually doing the checking. My first impression is that this is a lot of
code. Can we simplify it?
I played with this and It is not be reduced
Tom Lane t...@sss.pgh.pa.us writes:
That's how I did it first, but Alvaro opposed to that because it allows
for more than one extension to provide for the same feature name.
http://archives.postgresql.org/pgsql-hackers/2012-03/msg01425.php
Right, but the question that has to be considered
Hi,
I wanted to take up this as a GSOC 2012 project.
SQL supports nested queries. When the inner query contains a
correlation variable the present optimizer takes an iterative
execution plan. If the inner query scans over a relation, the
iterative plan chosen can be sub-optimal.
The goal of
On Fri, Mar 30, 2012 at 7:33 AM, Arun Chaitanya chaitan64a...@gmail.com wrote:
I wanted to take up this as a GSOC 2012 project.
This would be a great query planner optimization but the chances of
getting it done in one summer as a GSoC project seem to me to be nil.
You've never had a patch
On Wed, Mar 28, 2012 at 10:43 AM, Fujii Masao masao.fu...@gmail.com wrote:
On Wed, Mar 28, 2012 at 9:19 PM, Robert Haas robertmh...@gmail.com wrote:
On Tue, Mar 27, 2012 at 10:10 PM, Fujii Masao masao.fu...@gmail.com wrote:
On Wed, Mar 28, 2012 at 5:17 AM, Robert Haas rh...@postgresql.org
On Thu, Mar 29, 2012 at 10:04 AM, Andrew Dunstan and...@dunslane.net wrote:
1. I've been in discussion with some people about adding simple JSON extract
functions. We already have some (i.e. xpath()) for XML.
I've built a couple of applications that push data in and out of xml
via manual
On Fri, Mar 30, 2012 at 4:32 AM, Dimitri Fontaine
dimi...@2ndquadrant.fr wrote:
I did that another way in previous incarnations of the patch, which was
to allow for INSTEAD OF event trigger backed by a SECURITY DEFINER
function. When the extension is whitelisted, prevent against recursion
then
Thanks a lot Heikki.
I have already posted an example in the mail.
The link to the paper is
http://www.iith.ac.in/~ravig/courses/cs5050/papers/decorrelation-cesar.pdf
Hope this helps,
Arun
On Fri, Mar 30, 2012 at 5:32 PM, Heikki Linnakangas
heikki.linnakan...@enterprisedb.com wrote:
(off-list)
Thanks Robert,
Yes. I think I am being over ambitious as I never had any Open Source
development experience.
Anyways, please go through the idea. I have posted the link to the
paper in on of the replies.
Please, suggest me other options which I can take up as a GSOC 2012 project.
On Fri, Mar
Arun Chaitanya chaitan64a...@gmail.com writes:
The link to the paper is
http://www.iith.ac.in/~ravig/courses/cs5050/papers/decorrelation-cesar.pdf
Given the authorship of that paper, I'd have to wonder whether Microsoft
has filed for any patents regarding these ideas.
On 03/30/2012 09:57 AM, Merlin Moncure wrote:
What I'm saying is that jsonpath probably isn't the whole story:
another way of bulk moving json into native backend structures without
parsing would also be very helpful. For example, being able to cast a
json document into a record or a record
On Fri, Mar 30, 2012 at 4:30 PM, Daniel Farina dan...@heroku.com wrote:
On Thu, Mar 29, 2012 at 10:55 PM, Dobes Vandermeer dob...@gmail.com
wrote:
Virtual hosts. Same port. I think SPDY or like-protocols [...] give a
crisp treatment to
interactive, stateful workloads involving
On Fri, Mar 30, 2012 at 9:57 PM, Merlin Moncure mmonc...@gmail.com wrote:
On Thu, Mar 29, 2012 at 10:04 AM, Andrew Dunstan and...@dunslane.net
wrote:
1. I've been in discussion with some people about adding simple JSON
extract
functions. We already have some (i.e. xpath()) for XML.
Your
Robert Haas robertmh...@gmail.com writes:
Oh, right: I remember that now. I still think it's a bad way to do
it, because the trigger potentially has a lot of work to do to
reconstruct a working command string, and it still ends up getting
executed by the wrong user. For CREATE EXTENSION it's
On Fri, Mar 30, 2012 at 10:55 AM, Dobes Vandermeer dob...@gmail.com wrote:
Well, in our case HTTP is a clear win (but not replacement) and SPDY a
potential one (even as a replacement). Even if SPDY is not widely adopted
it could still replace FEBE if there's a clear advantage to using it, I
On Thu, Mar 29, 2012 at 06:56:30PM -0400, Tom Lane wrote:
Marko Kreen mark...@gmail.com writes:
My conclusion is that row-processor API is low-level expert API and
quite easy to misuse. It would be preferable to have something more
robust as end-user API, the PQgetRow() is my suggestion
Marko Kreen mark...@gmail.com writes:
On Thu, Mar 29, 2012 at 06:56:30PM -0400, Tom Lane wrote:
Marko Kreen mark...@gmail.com writes:
Second conclusion is that current dblink row-processor usage is broken
when user uses multiple SELECTs in SQL as dblink uses plain PQexec().
Yeah. Perhaps we
On Fri, Mar 30, 2012 at 11:59:12AM -0400, Tom Lane wrote:
Marko Kreen mark...@gmail.com writes:
On Thu, Mar 29, 2012 at 06:56:30PM -0400, Tom Lane wrote:
Marko Kreen mark...@gmail.com writes:
Second conclusion is that current dblink row-processor usage is broken
when user uses multiple
On 03/30/2012 11:41 AM, Robert Haas wrote:
On Fri, Mar 30, 2012 at 10:55 AM, Dobes Vandermeerdob...@gmail.com wrote:
Well, in our case HTTP is a clear win (but not replacement) and SPDY a
potential one (even as a replacement). Even if SPDY is not widely adopted
it could still replace FEBE
I've been playing around with perf record on the IBM POWER7 machine,
and it's pretty cool. One of the things I don't like is that some of
the tools don't produce very nice text reports that you can cut and
paste into an email - it's kind of a text-based GUI where you can zoom
around and look at
On Fri, Mar 30, 2012 at 7:04 PM, Marko Kreen mark...@gmail.com wrote:
Have you looked at the examples? PQgetResult() is pretty good hint
that one resultset finished...
Ok, the demos are around this long thread and hard to find,
so here is a summary of links:
Original design mail:
I noticed while doing some tests that the checkpointer process does not
recover very nicely after a backend crashes under postmaster -T (after
all processes have been kill -CONTd, of course, and postmaster told to
shutdown via Ctrl-C on its console). For some reason it seems to get
stuck on a
On fre, 2012-03-23 at 07:52 -0700, David Fetter wrote:
On Thu, Mar 22, 2012 at 06:05:30PM -0400, Andrew Dunstan wrote:
On 03/22/2012 05:49 PM, Bruce Momjian wrote:
Robert Haas and I are disappointed by this change. I liked the
fact that I could post nice-looking SQL queries without having
On Fri, Mar 30, 2012 at 9:11 AM, Andrew Dunstan and...@dunslane.net wrote:
On 03/30/2012 11:41 AM, Robert Haas wrote:
On Fri, Mar 30, 2012 at 10:55 AM, Dobes Vandermeerdob...@gmail.com
wrote:
Well, in our case HTTP is a clear win (but not replacement) and SPDY a
potential one (even as a
On Fri, Mar 30, 2012 at 5:27 PM, Robert Haas robertmh...@gmail.com wrote:
If you expand that branch of the call tree, you find that all of them
are coming eventually from secure_read; the server is waiting for a
new query from the client. This is, obviously, overhead we can't
eliminate from
On Fri, Mar 30, 2012 at 10:21 AM, Daniel Farina dan...@heroku.com wrote:
Any enhancement here that can't be used with libpq via, say, drop-in
.so seems unworkable to me, and that's why any solution that is
basically proxying to the database is basically a non-starter outside
the very earliest
Greg Stark st...@mit.edu writes:
On Fri, Mar 30, 2012 at 5:27 PM, Robert Haas robertmh...@gmail.com wrote:
If you expand that branch of the call tree, you find that all of them
are coming eventually from secure_read; the server is waiting for a
new query from the client. This is, obviously,
On Fri, Mar 30, 2012 at 1:30 PM, Greg Stark st...@mit.edu wrote:
On Fri, Mar 30, 2012 at 5:27 PM, Robert Haas robertmh...@gmail.com wrote:
If you expand that branch of the call tree, you find that all of them
are coming eventually from secure_read; the server is waiting for a
new query from
(in hopes that the current changes to tab-completion will help to get this
fixed)
tab-completion goes wrong on SET setting=...
example:
If you want to input set search_path=myschema; without spaces around '=',
and you try tab-completion halfway the schemaname:
set search_path=mysch
On Thu, 2012-03-22 at 14:55 +0200, Ants Aasma wrote:
Hi,
while working on a support case I stumbled upon a bug in pg_upgrade.
Upgrade fails with No such file or directory when a database is
moved to a non-default tablespace and contains a table that is moved
to pg_default. The cause seems
Marko Kreen mark...@gmail.com writes:
On Wed, Mar 07, 2012 at 03:14:57PM +0900, Kyotaro HORIGUCHI wrote:
My suggestion - check in getAnotherTuple whether resultStatus is
already error and do nothing then. This allows internal pqAddRow
to set regular out of memory error. Otherwise give
On Fri, Mar 30, 2012 at 05:18:42PM -0400, Tom Lane wrote:
Marko Kreen mark...@gmail.com writes:
On Wed, Mar 07, 2012 at 03:14:57PM +0900, Kyotaro HORIGUCHI wrote:
My suggestion - check in getAnotherTuple whether resultStatus is
already error and do nothing then. This allows internal
Marko Kreen mark...@gmail.com writes:
On Fri, Mar 30, 2012 at 05:18:42PM -0400, Tom Lane wrote:
I'm pretty dissatisfied with the error reporting situation for row
processors. You can't just decide not to solve it, which seems to be
the current state of affairs. What I'm inclined to do is to
On Friday, March 30, 2012 06:27:36 PM Robert Haas wrote:
Probability=No, score=-3.2 required=5.0 tests=AWL,BAYES_00,
RCVD_IN_DNSWL_LOW autolearn=ham version=3.2.5 I've been playing around
with perf record on the IBM POWER7 machine, and it's pretty cool. One
of the things I don't like is
On Sat, Mar 31, 2012 at 1:13 AM, Tom Lane t...@sss.pgh.pa.us wrote:
Marko Kreen mark...@gmail.com writes:
On Fri, Mar 30, 2012 at 05:18:42PM -0400, Tom Lane wrote:
I'm pretty dissatisfied with the error reporting situation for row
processors. You can't just decide not to solve it, which seems
Marko Kreen mark...@gmail.com writes:
On Sat, Mar 31, 2012 at 1:13 AM, Tom Lane t...@sss.pgh.pa.us wrote:
Not if the message is a constant string, which seems like the typical
situation (think out of memory). If the row processor does need a
buffer for a constructed string, it could make use
I wrote:
How about getting # of rows estimate by executing EXPLAIN for
fully-fledged remote query (IOW, contains pushed-down WHERE clause),
and
estimate selectivity of local filter on the basis of the statistics
which are generated by FDW via do_analyze_rel() and FDW-specific
sampling
2012/3/29 Marko Kreen mark...@gmail.com
I can't find a place where WAL replay updates values under XLogCtl.
If that really does not happen, that would explain why standbys can
see wrong epoch.
No clue yet how master can get broken.
Details about environment:
Debian
Linux db
Tom Lane wrote:
Ants Aasmaa...@cybertec.at writes:
A user complained on pgsql-performance that SELECT col FROM table
GROUP BY col LIMIT 2; performs a full table scan. ISTM that it's safe
to return tuples from hash-aggregate as they are found when no
aggregate functions are in use. Attached is a
On Fri, Mar 30, 2012 at 9:27 AM, Robert Haas robertmh...@gmail.com wrote:
The more interesting waits, in my view anyway, are the ones that come
from LWLockAcquire, which account for nearly all of the semaphore
sleeps. As you can see, XLogInsert accounts for over half of those,
and
On Fri, Mar 30, 2012 at 10:07 PM, Jeff Janes jeff.ja...@gmail.com wrote:
Which I've now done, and it actually goes the other way. with -F50,
not only do almost all pgbench_accounts updates still lead to a clean,
but a good chunk of the updates to pgbench_tellers lead to a clean as
well. If
On Fri, Mar 30, 2012 at 1:55 PM, Robert Haas robertmh...@gmail.com wrote:
Actually, what is really bugging me is that I cannot find any way of
getting a profile that reflects the *time* spent waiting rather than
merely the *number* of waits. That seems like an obvious thing to
want, and I
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