| From: | "Seki, Eiji" <seki(dot)eiji(at)jp(dot)fujitsu(dot)com> |
|---|---|
| To: | 'Simon Riggs' <simon(at)2ndquadrant(dot)com> |
| Cc: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
| Subject: | Re: Proposal: GetOldestXminExtend for ignoring arbitrary vacuum flags |
| Date: | 2017-02-28 00:25:41 |
| Message-ID: | A11BD0E1A40FAC479D740CEFA373E203396AAE03@g01jpexmbkw05 |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
on 2017-02-24 04:41:09 Simon Riggs wrote:
> ...you didn't comment at all on the accuracy and usefulness of the
> gathered statistics, when the sample is biased towards non-updated
> data.
In my understanding, the sample for statistics is not biased at least in our use case because the conversion process from WOS to ROS never modify (but only read) indexed table and modify only an index relation. And I think such a process that modifies some tables should not ignore analyze processes.
--
Regards,
Eiji Seki
Fujitsu
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Michael Paquier | 2017-02-28 00:27:30 | Re: Creation of "Future" commit fest, named 2017-07 |
| Previous Message | David Steele | 2017-02-28 00:25:32 | PATCH: Make pg_stop_backup() archive wait optional |