Re: database error xx000?

Поиск
Список
Период
Сортировка
От Kenneth Tilton
Тема Re: database error xx000?
Дата
Msg-id CAECCA8ZCg6AmrE_oBYDRpOMyT44VXoiBA-K2+b67EDDpY8_ihw@mail.gmail.com
обсуждение исходный текст
Ответ на Re: database error xx000?  (dennis jenkins <dennis.jenkins.75@gmail.com>)
Список pgsql-general
Дерево обсуждения


On Thu, Apr 26, 2012 at 3:07 PM, dennis jenkins <dennis.jenkins.75@gmail.com> wrote:
On Thu, Apr 26, 2012 at 1:59 PM, Kenneth Tilton <ktilton@mcna.net> wrote:
On Thu, Apr 26, 2012 at 2:24 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
 
Can you produce a self-contained test case?

I doubt it. Every test iteration I run includes a lot of redefining of functions and triggers all over the map, and it works fine thru dozens of iterations. The wheels seem to come off after a serious refactoring. Nothing is needed to clear the problem except (it seems) close any connections to the DB, so I guess some optimization does not work in the face of sufficient dynamic redefinition.



Suggestion: create a program which attempts to stress-test Postgresql by doing similar things.  Even if a single test case does not reliably reproduce the issue, a stress-test might trigger the condition after some time.


I am starting to suspect this does it (having reproduced the problem with vastly less effort than suspected): with function A calling function B, and function B coming in several variants (diff params), drop then define A and then drop/define only one variant of B. Order there may not matter.

I plan anyway to enhance our builder so it knows about function overloading and rebuilds all variants when it rebuilds one. If the problem goes away I'll take a crack at creating a reproducible.

Thx for the feedback.

-ken

В списке pgsql-general по дате отправления:

Предыдущее
От: Merlin Moncure
Дата:
Сообщение: Re: Which data type to use for UTF8 JSON and perl/PHP: varchar, text or bytea?
Следующее
От: Dmitry Koterov
Дата:
Сообщение: Difference between speed of 2 functions: SQL+STABLE and PLPGSQL+EXECUTE