| From: | "Marko Kreen" <markokr(at)gmail(dot)com> |
|---|---|
| To: | "Teodor Sigaev" <teodor(at)sigaev(dot)ru> |
| Cc: | "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Core team statement on replication in PostgreSQL |
| Date: | 2008-05-29 19:22:09 |
| Message-ID: | e51f66da0805291222w5a0928ebk3d96dfe5bd713c0a@mail.gmail.com |
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On 5/29/08, Teodor Sigaev <teodor(at)sigaev(dot)ru> wrote:
> > in this case too. So each slave just needs to report its own longest
> > open tx as "open" to master. Yes, it bloats master but no way around it.
>
> Slaves should not report it every time or every transaction. Vacuum on
> master will ask them before doing a real work.
That is bit too slow if we want to do some page-level cleanup with
regular transactions / bgwriter. But once or twice per minute update
should work fine.
--
marko
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