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Re: ALTER TABLE lock strength reduction patch is unsafe - Mailing list pgsql-hackers

From Alvaro Herrera
Subject Re: ALTER TABLE lock strength reduction patch is unsafe
Date
Msg-id 1308680556-sup-3287@alvh.no-ip.org
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In response to Re: ALTER TABLE lock strength reduction patch is unsafe  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: ALTER TABLE lock strength reduction patch is unsafe
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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@commandprompt.com>
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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