Re: WIP checksums patch
| От | Christopher Browne |
|---|---|
| Тема | Re: WIP checksums patch |
| Дата | |
| Msg-id | CAFNqd5XPpvKkY7gyT37Z_H-TAjyFw1sG2RQzSOFP2f9CXmKG2A@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: WIP checksums patch (Robert Haas <robertmhaas@gmail.com>) |
| Ответы |
Re: WIP checksums patch
|
| Список | pgsql-hackers |
On Mon, Nov 5, 2012 at 12:19 PM, Robert Haas <robertmhaas@gmail.com> wrote:
I see one thing to be concerned about, there...
I imagine it would not be a totally happy thing if the only way to switch it on/off was to use Slony or Londiste to replicate into a database with the opposite setting. (e.g. - This implies that built-in replication may only replicate into a database with the identical checksum configuration.)
It's not outrageous for it to be a pretty heavyweight operation to switch polarities, but there's such a thing as too heavy.
--
When confronted by a difficult problem, solve it by reducing it to the
question, "How would the Lone Ranger handle this?"
On Mon, Oct 29, 2012 at 4:31 PM, Jim Nasby <jim@nasby.net> wrote:Yeah. I definitely think that we could shed an enormous amount of
> For whatever it's worth... we (and presumably others) still use londiste (or
> Slony) as our upgrade path, so we could tolerate a cluster-wide setting.
> We'd just set it when building new clusters via londiste and forget about
> it.
>
> So I'd rather see this get in at a cluster level than not make it at all
> while we wait for something better.
complexity by deciding that this is, for now, an option that can only
be selected at initdb time. That would remove approximately 85% of
everything I've ever disliked about this patch - without, I think,
precluding the possibility of improving things later.
I see one thing to be concerned about, there...
I imagine it would not be a totally happy thing if the only way to switch it on/off was to use Slony or Londiste to replicate into a database with the opposite setting. (e.g. - This implies that built-in replication may only replicate into a database with the identical checksum configuration.)
It's not outrageous for it to be a pretty heavyweight operation to switch polarities, but there's such a thing as too heavy.
--
question, "How would the Lone Ranger handle this?"
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