| From: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
|---|---|
| To: | Jeff Janes <jeff(dot)janes(at)gmail(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Jesper Pedersen <jesper(dot)pedersen(at)redhat(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, "Jamison, Kirk" <k(dot)jamison(at)jp(dot)fujitsu(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, "fabriziomello(at)gmail(dot)com" <fabriziomello(at)gmail(dot)com>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Bruce Momjian <bruce(at)momjian(dot)us> |
| Subject: | Re: pg_upgrade: Pass -j down to vacuumdb |
| Date: | 2019-03-29 09:58:01 |
| Message-ID: | da27737d-9f3e-6798-c999-4adaa22c47f5@2ndquadrant.com |
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| Lists: | pgsql-hackers |
On 2019-03-28 02:43, Jeff Janes wrote:
> At first blush I thought it was obvious that you would not want to run
> analyze-in-stages in parallel. But after thinking about it some more
> and reflecting on experience doing some troublesome upgrades, I would
> reverse that and say it is now obvious you do want at least the first
> stage of analyze-in-stages, and probably the first two, to run in
> parallel. That is not currently an option it supports, so we can't
> really recommend it in the script or the docs.
So do you think we should copy down the -j option from pg_upgrade, or
make some other arrangement?
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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