Re: After ~Crash Sequence not correct

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От Bruce Momjian
Тема Re: After ~Crash Sequence not correct
Дата
Msg-id 200201030557.g035vDA14407@candle.pha.pa.us
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Ответ на Re: After ~Crash Sequence not correct  ("Mikheev, Vadim" <vmikheev@SECTORBASE.COM>)
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Mikheev, Vadim wrote:
> > I have verified that killing the postmaster after a few nextval's
> > leaves things in a bad state after restart.
> >
> > I think I see the problem: in nextval(), the sequence data written to
> > the WAL log is different from that written to the data page.  Isn't
> > that bogus?
>
> It was made to avoid WAL-loging on each nextval call, ie it should work
> like OID pre-fetching: value stored in WAL must always "exceed" values
> returned by nextval so on the after-crash-restart sequence should be
> advanced to value which was never returned by nextval (for non-cycled
> sequences). Maybe I made some mistakes in implementation?

Was this ever fixed?

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