Re: Freezing is not WAL-logged

Tom Lane wrote:
> "Heikki Linnakangas" <heikki@enterprisedb.com> writes:
> > I just noticed that freezing a tuple (in vacuumlazy.c) is not
> > WAL-logged.
>
> The theory is that this doesn't matter because the tuple is committed
> either way ... it's equivalent to a hint-bit update which we don't
> WAL-log either.

Also it'd be hugely expensive to log each freeze operation.  The
alternative would be to log a VACUUM FREEZE, but that has the potential
to cause enormous recovery runtime.

--
Alvaro Herrera                                http://www.CommandPrompt.com/
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