On Sat, Sep 19, 2020 at 11:00:31AM -0500, Justin Pryzby wrote:
> Maybe it's a bad idea if the checkpointer is continuously changing its
> display.
> I don't see the utility in it, since log_checkpoints does more than ps could
> ever do. I'm concerned that would break things for someone using some
Hi Andy,
On Fri, Oct 2, 2020 at 1:04 AM Andy Fan wrote:
>
> Given the plan example:
>
> CREATE TABLE measurement (
> city_id int not null,
> logdate date not null,
> peaktempint,
> unitsales int
> ) PARTITION BY RANGE (logdate);
>
> CREATE TABLE measu
Can you elaborate what you meant by the new "print overheads should probably
be avoided" comment?
Because printf is slow and this is on the critical path of data
generation. Printf has to interpret the format each time just to print
three ints, specialized functions could be used which woul
On Fri, Oct 02, 2020 at 04:28:14PM +0900, Michael Paquier wrote:
> > Related: I have always thought that this message meant "recovery will
> > complete
> > Real Soon", but I now understand it to mean "beginning the recovery
> > checkpoint,
> > which is flagged CHECKPOINT_IMMEDIATE" (and may take
From: Masahiko Sawada
> You proposed the first idea
> to avoid such a situation that FDW implementor can write the code
> while trying to reduce the possibility of errors happening as much as
> possible, for example by usingpalloc_extended(MCXT_ALLOC_NO_OOM) and
> hash_search(HASH_ENTER_NULL) but
On 01/10/2020 14:21, Daniel Gustafsson wrote:
On 1 Oct 2020, at 12:54, Heikki Linnakangas wrote:
Most checks when converting between SQL and Python types use the PLy_elog()
function, which uses the genericc ERRCODE_EXTERNAL_ROUTINE_EXCEPTION error
code, but I think ERRCODE_ARRAY_SUBSCRIPT_E
Hi,
Robert forwarded me a pgsql-general thread [1] where a ON DELETE
CASCADE specified on a foreign key pointing to a partitioned table is
shown to cause a possibly surprising end result during an update of
the partitioned table. Example from that thread:
create table parent ( id serial, constra
Anna Akenteva писал 2020-04-08 22:36:
On 2020-04-08 04:09, Kyotaro Horiguchi wrote:
I like your suggested keywords! I think that "AFTER" + "WITHIN" sound
the most natural. We could completely give up the LSN keyword for now.
The final command could look something like:
BEGIN AFTER ‘0/303EC60’ W
> On 2 Oct 2020, at 13:44, Heikki Linnakangas wrote:
>
> On 01/10/2020 14:21, Daniel Gustafsson wrote:
>>> On 1 Oct 2020, at 12:54, Heikki Linnakangas wrote:
>>> Most checks when converting between SQL and Python types use the PLy_elog()
>>> function, which uses the genericc ERRCODE_EXTERNAL_RO
On 02.10.2020 3:28, Michael Paquier wrote:
On Fri, Oct 02, 2020 at 12:16:25AM +, tsunakawa.ta...@fujitsu.com wrote:
IIUC, walsender tries hard to send WAL as fast as possible to reduce
replication lag and transaction response time, so it doesn't try to
peek each WAL record. I think it's
On Thu, Oct 1, 2020 at 9:10 PM James Coleman wrote:
>
> On Thu, Oct 1, 2020 at 6:08 PM Tomas Vondra
> wrote:
> >
> > On Thu, Oct 01, 2020 at 09:02:57AM -0400, James Coleman wrote:
> > >On Thu, Oct 1, 2020 at 3:09 AM Jaime Casanova
> > > wrote:
> > >>
> > >> On Wed, 30 Sep 2020 at 21:21, James Col
On Friday, October 2, 2020, Amit Langote wrote:
>
> Reporter on that thread says that the last update should have failed
> and I don't quite see a workable alternative to that.
To be clear the OP would rather have it just work, the same as the
non-row-movement version. Maybe insert the new row
On Fri, Oct 02, 2020 at 09:19:44AM -0400, James Coleman wrote:
...
I've been able to confirm that the problem goes away if we stop adding
the gather merge paths in generate_useful_gather_paths().
I'm not sure yet what conclusion that leads us to. It seems to be that
the biggest clue remains th
Michael Paquier wrote:
> > Hmm ... I think that that is pretty standard behavior for a lot of
> > our utility commands. Trying something at random,
>
> The behavior handling is a bit inconsistent. For example EXPLAIN and
> VACUUM don't do that, because their parenthesized grammar got
>
On Fri, Oct 2, 2020 at 10:32 AM Tomas Vondra
wrote:
>
> On Fri, Oct 02, 2020 at 09:19:44AM -0400, James Coleman wrote:
> >
> > ...
> >
> >I've been able to confirm that the problem goes away if we stop adding
> >the gather merge paths in generate_useful_gather_paths().
> >
> >I'm not sure yet what
On Fri, Oct 2, 2020 at 10:53 AM James Coleman wrote:
>
> On Fri, Oct 2, 2020 at 10:32 AM Tomas Vondra
> wrote:
> >
> > On Fri, Oct 02, 2020 at 09:19:44AM -0400, James Coleman wrote:
> > >
> > > ...
> > >
> > >I've been able to confirm that the problem goes away if we stop adding
> > >the gather m
On 02/10/2020 15:06, Daniel Gustafsson wrote:
On 2 Oct 2020, at 13:44, Heikki Linnakangas wrote:
On 01/10/2020 14:21, Daniel Gustafsson wrote:
On that note, wouldn't the dimension check errors in PLySequence_ToArray be
just as well off using normal ereport()'s? Only one of them seem to error
"Daniel Verite" writes:
> Assuming we agree that redundant options should consistently
> raise an error for a certain class of statements, could it be handled
> at the grammar level?
I don't think this'd be a great idea. The grammar would have to
do something pretty brute-force to check for dupl
On 2020-09-29 18:37, Tom Lane wrote:
Unfortunately this has still got a problem: it will mishandle the case of
a child column that is GENERATED while its parent is not. Peter opined
way upthread that we should not allow that, but according to my testing
we do.
Did I opine that? Commit 086ffdd
On Thu, Oct 01, 2020 at 09:12:53PM -0400, Tom Lane wrote:
> Mark Wong writes:
> > I'm getting Tom set up with access too, in case he has time before me to
> > get a stack trace to see what's happening...
>
> tl;dr: it's hard to conclude that this is anything but a compiler bug.
>
> I was able to
Hello hackers,
In heap_prepare_freeze_tuple, we make the following assumption:
* It is assumed that the caller has checked the tuple with
* HeapTupleSatisfiesVacuum() and determined that it is not HEAPTUPLE_DEAD
* (else we should be removing the tuple, not freezing it).
Thus, when we see a co
On 2020/10/02 0:46, Bharath Rupireddy wrote:
On Thu, Oct 1, 2020 at 8:10 PM Fujii Masao wrote:
pg_stat_clear_snapshot() can be used to reset the entry.
Thanks. I wasn't knowing it.
+ EXIT WHEN proccnt = 0;
+END LOOP;
Isn't it better to sleep here, to avoid th busy lo
On 2020-10-02 10:45:58 -0700, Mark Wong wrote:
> I went ahead and stopped the jobs to run with clang 3.9. This is also
> the same system that was running clang 3.8 too. I tried looking for EOL
> dates, but had trouble finding anything... But I can change the
> optimization flag if we want it bac
On Fri, Oct 02, 2020 at 10:55:14AM -0400, James Coleman wrote:
On Fri, Oct 2, 2020 at 10:53 AM James Coleman wrote:
On Fri, Oct 2, 2020 at 10:32 AM Tomas Vondra
wrote:
>
> On Fri, Oct 02, 2020 at 09:19:44AM -0400, James Coleman wrote:
> >
> > ...
> >
> >I've been able to confirm that the prob
Hi,
On 2020-10-02 23:26:05 +0530, Kuntal Ghosh wrote:
> In heap_prepare_freeze_tuple, we make the following assumption:
>
> * It is assumed that the caller has checked the tuple with
> * HeapTupleSatisfiesVacuum() and determined that it is not HEAPTUPLE_DEAD
> * (else we should be removing the
On Fri, Oct 2, 2020 at 2:25 PM Tomas Vondra
wrote:
>
> On Fri, Oct 02, 2020 at 10:55:14AM -0400, James Coleman wrote:
> >On Fri, Oct 2, 2020 at 10:53 AM James Coleman wrote:
> >>
> >> On Fri, Oct 2, 2020 at 10:32 AM Tomas Vondra
> >> wrote:
> >> >
> >> > On Fri, Oct 02, 2020 at 09:19:44AM -0400,
Hi,
I am having a hard time pinning down which function creates a prepared
statement. Say in some language I create a Prepared Statement and send it
off. Before the first time I execute the prepared statement, which function
is the one that 'creates' the prepared statement. In other words, which
f
On Fri, Oct 2, 2020 at 1:14 PM Patrick REED
wrote:
> Hi,
>
> I am having a hard time pinning down which function creates a prepared
> statement.
>
...
> e.g.
> In your favorite language:
>
This doesn't seem like the correct list for this question. Ponder the
following and consider sending any
On Fri, Oct 02, 2020 at 04:12:11PM -0400, James Coleman wrote:
On Fri, Oct 2, 2020 at 2:25 PM Tomas Vondra
wrote:
On Fri, Oct 02, 2020 at 10:55:14AM -0400, James Coleman wrote:
>On Fri, Oct 2, 2020 at 10:53 AM James Coleman wrote:
>>
>> On Fri, Oct 2, 2020 at 10:32 AM Tomas Vondra
>> wrote:
On Fri, Oct 2, 2020 at 4:56 PM Tomas Vondra
wrote:
>
> On Fri, Oct 02, 2020 at 04:12:11PM -0400, James Coleman wrote:
> >On Fri, Oct 2, 2020 at 2:25 PM Tomas Vondra
> > wrote:
> >>
> >> On Fri, Oct 02, 2020 at 10:55:14AM -0400, James Coleman wrote:
> >> >On Fri, Oct 2, 2020 at 10:53 AM James Colem
On Fri, Oct 2, 2020 at 4:56 PM Tomas Vondra
wrote:
> >And I don't see any reason why the CASE statement couldn't in theory
> >(I don't know the internals enough to know when it actually happens)
> >be done as part of the base relation scan (in this case, the seq
> >scan). It's not dependent on any
On Tue, Sep 29, 2020 at 2:44 AM Laurenz Albe wrote:
> > * Are we trying to capture ONLY client initiated disconnects in
> > m_aborted (we are not handling other disconnects by not accounting for
> > EOF..like if psql was killed)? If yes, why?
>
> I thought it was interesting to know how many dat
On Fri, Oct 02, 2020 at 05:45:52PM -0400, James Coleman wrote:
On Fri, Oct 2, 2020 at 4:56 PM Tomas Vondra
wrote:
...
More importanly, it does not actually fix the issue - it does fix that
particular query, but just replacing the DISTINCT with either ORDER BY
or GROUP BY make it fail again :-
On Fri, Oct 2, 2020 at 6:28 PM Tomas Vondra
wrote:
>
> On Fri, Oct 02, 2020 at 05:45:52PM -0400, James Coleman wrote:
> >On Fri, Oct 2, 2020 at 4:56 PM Tomas Vondra
> > wrote:
> >>
> >> ...
> >>
> >> More importanly, it does not actually fix the issue - it does fix that
> >> particular query, but
Hello Vignesh,
I've done some basic benchmarking on the v4 version of the patches (but
AFAIKC the v5 should perform about the same), and some initial review.
For the benchmarking, I used the lineitem table from TPC-H - for 75GB
data set, this largest table is about 64GB once loaded, with another
Hi Amit:
Very glad to see your comment!
On Fri, Oct 2, 2020 at 4:21 PM Amit Langote wrote:
> Hi Andy,
>
> On Fri, Oct 2, 2020 at 1:04 AM Andy Fan wrote:
> >
> > Given the plan example:
> >
> > CREATE TABLE measurement (
> > city_id int not null,
> > logdate date not n
On Fri, Oct 2, 2020 at 11:32 PM David G. Johnston
wrote:
> On Friday, October 2, 2020, Amit Langote wrote:
>>
>>
>> Reporter on that thread says that the last update should have failed
>> and I don't quite see a workable alternative to that.
>
>
> To be clear the OP would rather have it just work
On Fri, Sep 25, 2020 at 09:33:48AM +0900, Kyotaro Horiguchi wrote:
> At Thu, 24 Sep 2020 11:43:40 -0400, Bruce Momjian wrote in
> > On Thu, Sep 24, 2020 at 12:44:01PM +0900, Michael Paquier wrote:
> > > On Tue, Sep 01, 2020 at 10:27:03PM -0400, Bruce Momjian wrote:
> > > > OK, good. Let's wait a
On Fri, Oct 2, 2020 at 12:26 PM Keisuke Kuroda
wrote:
>
> Hi Dilip, Amit,
>
> > > 5. Can you please once repeat the performance test done by Keisuke-San
> > > to see if you have similar observations? Additionally, see if you are
> > > also seeing the inconsistency related to the Truncate message r
On Fri, Oct 2, 2020 at 7:07 PM James Coleman wrote:
>
> On Fri, Oct 2, 2020 at 6:28 PM Tomas Vondra
> wrote:
> >
> > On Fri, Oct 02, 2020 at 05:45:52PM -0400, James Coleman wrote:
> > >On Fri, Oct 2, 2020 at 4:56 PM Tomas Vondra
> > > wrote:
> > >>
> > >> ...
> > >>
> > >> More importanly, it doe
On Wed, 30 Sep 2020 at 18:10, Amit Kapila wrote:
>
> On Wed, Sep 30, 2020 at 1:12 PM Dilip Kumar wrote:
> >
> > On Fri, Sep 25, 2020 at 4:33 PM Amit Kapila wrote:
> > >
> > > On Thu, Sep 24, 2020 at 5:44 PM Amit Kapila
> > > wrote:
> > >
> > > I have done some more testing of this patch especi
On 30.09.20 14:53, Heikki Linnakangas wrote:
On 30/09/2020 14:25, Dagfinn Ilmari Mannsåker wrote:
Michael Paquier writes:
On Mon, Aug 10, 2020 at 12:52:17PM +, Jürgen Purtz wrote:
The new status of this patch is: Waiting on Author
This has not been answered yet, so I have marked the pa
I saw someone ask once for a schema diagram of the system catalogs.
Things like that have occasionally been produced manually, but they are
not regularly updated. That made me wonder, why can't we add primary
and foreign keys to system catalogs and then have existing tools produce
such a schem
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