| From: | Kevin Grittner <kgrittn(at)gmail(dot)com> |
|---|---|
| To: | Condor <condor(at)stz-bg(dot)com> |
| Cc: | Dorian Hoxha <dorian(dot)hoxha(at)gmail(dot)com>, PostgreSQL <pgsql-general(at)postgresql(dot)org>, pgsql-general-owner(at)postgresql(dot)org |
| Subject: | Re: Uber migrated from Postgres to MySQL |
| Date: | 2016-07-27 19:25:41 |
| Message-ID: | CACjxUsP6MY_oweT=f6cNc+uARYLkJ=KZiuVVkU_K+q9K04oSng@mail.gmail.com |
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| Lists: | pgsql-general |
On Wed, Jul 27, 2016 at 2:15 AM, Condor <condor(at)stz-bg(dot)com> wrote:
> They are right for upgrades.
> It's a hard to shutdown 1 TB database and wait couple of days pg_upgrade to
> finish upgrade and meanwhile database is offline.
What? I had a cluster over 3TB and it was offline for only 10
minutes doing a major version upgrade using pg_upgrade's --link
option. Of course, that was with minimal statistics -- just enough
to keep from getting truly stupid plans. If it takes *days* to run
pg_upgrade on a 1TB cluster either you have an insane number of
database objects or you are not taking advantage of the available
features.
--
Kevin Grittner
EDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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