| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: 16-bit page checksums for 9.2 |
| Date: | 2012-03-01 18:40:44 |
| Message-ID: | 4F4FC2AC.9070004@agliodbs.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
>> So a relation can't have some pages in Version 9.2, and other pages in
>> version 9.3? How will this work for 2TB tables?
>
> Not very well, but better than Tom's proposal to require upgrading the
> entire cluster in a single off-line operation.
Yes, but the result will be that anyone with a 2TB table will *never*
convert it to the new format. Which means we can never deprecate that
format, because lots of people will still be using it.
I continue to assert that all of this sounds like 9.3 work to me. I'm
really not keen on pushing through a hack which will make pushing in a
long-term solution harder.
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com
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