Re: Re: [COMMITTERS] pgsql: Make standby server continuously retry restoring the next WAL
От | Simon Riggs |
---|---|
Тема | Re: Re: [COMMITTERS] pgsql: Make standby server continuously retry restoring the next WAL |
Дата | |
Msg-id | 1265893599.7341.1454.camel@ebony обсуждение исходный текст |
Ответ на | Re: Re: [COMMITTERS] pgsql: Make standby server continuously retry restoring the next WAL (Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>) |
Ответы |
Re: Re: [COMMITTERS] pgsql: Make standby server continuously
retry restoring the next WAL
Re: Re: [COMMITTERS] pgsql: Make standby server continuously retry restoring the next WAL |
Список | pgsql-hackers |
On Thu, 2010-02-11 at 14:44 +0200, Heikki Linnakangas wrote: > Simon Riggs wrote: > > On Thu, 2010-02-11 at 14:22 +0200, Heikki Linnakangas wrote: > >> Simon Riggs wrote: > >>> On Wed, 2010-02-10 at 09:32 +0200, Heikki Linnakangas wrote: > >>>> Hmm, so after running restore_command, check the file size and if it's > >>>> too short, treat it the same as if restore_command returned non-zero? > >>>> And it will be retried on the next iteration. Works for me, though OTOH > >>>> it will then fail to complain about a genuinely WAL file that's > >>>> truncated for some reason. I guess there's no way around that, even if > >>>> you have a script as restore_command that does the file size check, it > >>>> will have the same problem. > >>> Are we trying to re-invent pg_standby here? > >> That's not the goal, but we seem to need some of the same functionality > >> in the backend now. > > > > I think you need to say why... > > See the quoted paragraph above. We should check the file size, so that > we will not fail if the WAL file is just being copied into the archive > directory. We can read, but that's not an explanation. By giving terse answers in that way you are giving the impression that you don't want discussion on these points. If you were running pg_standby as the restore_command then this error wouldn't happen. So you need to explain why running pg_standby cannot solve your problem and why we must fix it by replicating code that has previously existed elsewhere. -- Simon Riggs www.2ndQuadrant.com
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