| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
| Cc: | Boszormenyi Zoltan <zb(at)cybertec(dot)at>, Dimitri Fontaine <dfontaine(at)hi-media(dot)com>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Synchronization levels in SR |
| Date: | 2010-09-06 23:49:39 |
| Message-ID: | AANLkTiknqYCdZJc3vHRFu1iLq5iMnfgpmrRtMxua5s1e@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Mon, Sep 6, 2010 at 5:02 PM, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
> Then I respectfully suggest that you're releasing locks too early.
>
> Your proposal would allow a 2nd user to see the results of the 1st
> user's transaction before the 1st user knew about whether it had
> committed or not.
Marking the transaction committed in CLOG will have that effect
anyway. We are not doing strict two-phase locking.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise Postgres Company
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