| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: ALTER TABLE lock strength reduction patch is unsafe |
| Date: | 2011-06-21 18:24:31 |
| Message-ID: | 1308680556-sup-3287@alvh.no-ip.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Excerpts from Tom Lane's message of mar jun 21 11:06:22 -0400 2011:
> Please note that this position should not be regarded as support for
> Simon's proposed patch. I still think the right decision is to revert
> the ALTER TABLE feature, mainly because I do not believe this is the
> last bug in it. And the fact that there's a pre-existing bug with a
> vaguely similar symptom is no justification for introducing more bugs.
Note that this feature can be disabled by tweaking
AlterTableGetLockLevel so that it always returns AccessExclusive.
--
Álvaro Herrera <alvherre(at)commandprompt(dot)com>
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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