Re: extending relations more efficiently

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От Alvaro Herrera
Тема Re: extending relations more efficiently
Дата
Msg-id 1335978345-sup-7773@alvh.no-ip.org
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Ответ на Re: extending relations more efficiently  (Robert Haas <robertmhaas@gmail.com>)
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Excerpts from Robert Haas's message of mié may 02 12:55:17 -0400 2012:
>
> On Wed, May 2, 2012 at 12:46 PM, Alvaro Herrera
> <alvherre@commandprompt.com> wrote:
> > Agreed.  Perhaps to solve this issue what we need is a way to migrate
> > tuples from later pages into earlier ones.  (This was one of the points,
> > never resolved, that we discussed during the VACUUM FULL rework.)
>
> Yeah, I agree.  And frankly, we need to find a way to make it work
> without taking AccessExclusiveLock on the relation.  Having to run
> VACUUM FULL is killing actual users and scaring off potential ones.

And ideally without bloating the indexes while at it.

--
Álvaro Herrera <alvherre@commandprompt.com>
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support


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