| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
| Cc: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Magnus Hagander <magnus(at)hagander(dot)net>, Simon Riggs <simon(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Re: [COMMITTERS] pgsql: Basic Recovery Control functions for use in Hot Standby. Pause, |
| Date: | 2011-03-18 12:14:24 |
| Message-ID: | AANLkTik1QHrtOWhCxFK85A4dfd9C0A+Lqg7zc=zB0qO6@mail.gmail.com |
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On Fri, Mar 18, 2011 at 3:22 AM, Heikki Linnakangas
<heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
> If recovery target is set to before its consistent, ie. before
> minRecoveryPoint, we should throw an error before recovery even starts. I'm
> not sure if we check that at the moment.
I don't see how you could check that anyway. How do you know where
you're going to see the given XID/timestamp/named restore point until
you actually get there?
> Not sure what to to do recovery target is beyond minRecoveryPoint and
> pause_at_recovery_target=true, but the server hasn't been opened for hot
> standby yet (because it hasn't seen a running-xacts record yet). I agree
> it's pretty useless and annoying to stop there.
I think the reasonable options are "enter normal running" and "shut down".
In any event, it sounds like someone needs to fix this, and I don't
know enough to do it. Can you or Fujii Masao do it?
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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