| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org> |
| Subject: | Re: Protecting against unexpected zero-pages: proposal |
| Date: | 2010-11-09 22:03:09 |
| Message-ID: | 4CD9C51D.4030301@agliodbs.com |
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| Lists: | pgsql-hackers |
On 11/9/10 1:50 PM, Robert Haas wrote:
> 5. It would be pretty much impossible to run with autovacuum turned
> off, and in fact you would likely need to make it a good deal more
> aggressive in the specific case of aborted transactions, to mitigate
> problems #1, #3, and #4.
6. This would require us to be more aggressive about VACUUMing old-cold
relations/page, e.g. VACUUM FREEZE. This it would make one of our worst
issues for data warehousing even worse.
What about having this map (and other hintbits) be per-relation? Hmmm.
That wouldn't work for DDL, I suppose ...
--
-- Josh Berkus
PostgreSQL Experts Inc.
http://www.pgexperts.com
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