| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "Andreas 'ads' Scherbaum" <adsmail(at)wars-nicht(dot)de>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Core team statement on replication in PostgreSQL |
| Date: | 2008-07-15 22:56:31 |
| Message-ID: | 200807152256.m6FMuVa21901@momjian.us |
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| Thread: | |
| Lists: | pgsql-advocacy pgsql-hackers |
Alvaro Herrera wrote:
> Bruce Momjian wrote:
> > Alvaro Herrera wrote:
> > > Bruce Momjian wrote:
> > >
> > > > Added to TODO:
> > > >
> > > > o Reduce PITR WAL file size by removing full page writes and
> > > > by removing trailing bytes to improve compression
> > >
> > > If we remove full page writes, how does hint bit setting get propagated
> > > to the slave?
> >
> > We would remove full page writes that are needed for crash recovery, but
> > perhaps keep other full pages.
>
> How do you tell which is which?
The WAL format would have to be modified to indicate which entries can
be discarded.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +
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