Re: [PATCH] Space reservation v02
От | Greg Smith |
---|---|
Тема | Re: [PATCH] Space reservation v02 |
Дата | |
Msg-id | Pine.GSO.4.64.0901300017090.8766@westnet.com обсуждение исходный текст |
Ответ на | Re: [PATCH] Space reservation v02 (Bruce Momjian <bruce@momjian.us>) |
Список | pgsql-hackers |
On Thu, 29 Jan 2009, Bruce Momjian wrote: > One thing I think would help would be a pg_class column that says > whether the table is ready for upgrading. Some quick reminders here; Tom included that idea from one of your earlier discussions but also suggested a similar column in pg_database: http://archives.postgresql.org/pgsql-hackers/2008-11/msg00436.php The main objection I saw was Heikki suggesting that this isn't necessarily forward progress if that's not actually sufficient to save all the state information needed: http://archives.postgresql.org/pgsql-hackers/2008-11/msg00449.php This particular idea keeps coming up though, and I would imagine the worst case here is that it gets included in 8.4 but isn't enough; it's gotta at least help open options for future in-place upgrade work. (The other complaints revolved around multi-version upgrades, which are a pipe dream now anyway) Zdenek suggested that "latest processed block" would also be useful here: http://archives.postgresql.org/pgsql-hackers/2008-11/msg00540.php P.S. If anybody would like a 275 message "best of" archive just following the last four months of the pg_upgrade saga, let me know off-list; that's how I found all those so fast. As just that subset consists of 22 threads, it's kind of messy to sort through most other ways. -- * Greg Smith gsmith@gregsmith.com http://www.gregsmith.com Baltimore, MD
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