| From: | Jeff Davis <pgsql(at)j-davis(dot)com> |
|---|---|
| To: | Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: revised hstore patch |
| Date: | 2009-07-22 00:19:02 |
| Message-ID: | 1248221942.3840.6.camel@monkey-cat.sm.truviso.com |
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| Lists: | pgsql-hackers |
On Wed, 2009-07-22 at 01:06 +0100, Andrew Gierth wrote:
> I'm prepared to give slightly more consideration to option #3: make
> the new code read the old format as well as the new one. I believe
> (though I have not yet tested) that it is possible to reliably
> distinguish the two with relatively low overhead, though the overhead
> would be nonzero, and do an in-core format conversion (which would
> result in writing out the new format if anything changed).
It might be good to have a way to ensure that all values have been
upgraded to the new format. Otherwise you have to permanently maintain
the old format even across multiple upgrades. Maybe that's not a big
deal, but I thought I'd bring it up.
Regards,
Jeff Davis
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