Re: RecoveryInProgress() has critical side effects

Поиск
Список
Период
Сортировка
От Robert Haas
Тема Re: RecoveryInProgress() has critical side effects
Дата
Msg-id CA+TgmobKiqR66XV4zB5Kb=wJ3PKN4J_FTvkGxqOET20T_vB8hg@mail.gmail.com
обсуждение исходный текст
Ответ на Re: RecoveryInProgress() has critical side effects  (Heikki Linnakangas <hlinnaka@iki.fi>)
Ответы Re: RecoveryInProgress() has critical side effects  (Alvaro Herrera <alvherre@alvh.no-ip.org>)
Список pgsql-hackers
On Sat, Nov 20, 2021 at 3:22 PM Heikki Linnakangas <hlinnaka@iki.fi> wrote:
> But here's yet another idea: We could initialize RedoRecPtr and
> doPageWrites in InitXLogInsert(). It would seem like a pretty natural
> place for it.

I considered that, but it seemed like an abstraction violation to me,
because that code is part of xloginsert.c, which is mostly concerned
with assembly of write-ahead log records, not the associated
shared-memory state. Also, I don't think there's any guarantee that
the state in shared memory is initialized at the time we call that
function, so we might just be copying uninitialized memory into other
uninitialized memory.

> PS. typo in patch v2: s/prepard/prepared/

Thanks, fixed.

-- 
Robert Haas
EDB: http://www.enterprisedb.com

Вложения

В списке pgsql-hackers по дате отправления:

Предыдущее
От: Robert Haas
Дата:
Сообщение: Re: Can I assume relation would not be invalid during from ExecutorRun to ExecutorEnd
Следующее
От: Peter Eisentraut
Дата:
Сообщение: Re: Non-decimal integer literals