| From: | Peter Geoghegan <pg(at)heroku(dot)com> |
|---|---|
| To: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com> |
| Cc: | Ashesh Vashi <ashesh(dot)vashi(at)enterprisedb(dot)com>, Tomas Vondra <tv(at)fuzzy(dot)cz>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: pg_stat directory and pg_stat_statements |
| Date: | 2014-05-29 06:02:27 |
| Message-ID: | CAM3SWZSU8CwXQjr-VeC=g5DQe+YGW_au0gOd+-Tt7aSZKO9t1Q@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, May 28, 2014 at 10:49 PM, Fujii Masao <masao(dot)fujii(at)gmail(dot)com> wrote:
> You're concerned about the scenario using pg_upgrade? I'm not sure the detail
> of pg_upgrade. But if it doesn't work properly, we should have gotten
> the trouble
I'm not worried about pg_upgrade, because by design pg_stat_statements
will discard stats files that originated in earlier versions. However,
I don't see a need to change pg_stat_statements to serialize its
statistics to disk in the pg_stat directory before we branch off 9.4.
As you mentioned, it's harmless.
--
Peter Geoghegan
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