Re: Bug with sequences and WAL ?
| От | Philippe Ferreira |
|---|---|
| Тема | Re: Bug with sequences and WAL ? |
| Дата | |
| Msg-id | 43E48545.6060604@worldonline.fr обсуждение исходный текст |
| Ответ на | Re: Bug with sequences and WAL ? (Tom Lane <tgl@sss.pgh.pa.us>) |
| Список | pgsql-general |
>I don't think this is very important, because the normal behavior of >sequences is that after a crash the sequence can be up to 32 (IIRC) >counts beyond the last value actually delivered before the crash. >To get "exact" restart behavior we'd need to emit a separate xlog >record for each nextval() command, which seems like a pretty high >price considering that you cannot assume no holes in the sequence >values anyway. > > Hi, You are right. I've already seen sequences increase up to 24 or 32 after a failover with PITR. However, I'm also using PITR in order to do switchover. In this case, I think that nothing should change... But, I recognize that using PITR for switchover is rather an "unsupported" functionnality... Thank you, Philippe Ferreira.
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