Re: Reducing some DDL Locks to ShareLock

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Reducing some DDL Locks to ShareLock
Date: 2008-10-07 18:38:46
Message-ID: 1223404726.4747.249.camel@ebony.2ndQuadrant
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On Tue, 2008-10-07 at 11:15 -0400, Tom Lane wrote:
> Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> > 2. Also need to decide whether we want pg_class.reltriggers as int2 (as
> > implemented here) or switch to relhastriggers as boolean.
>
> I'd go for changing the column name/type. Yeah, you will break any
> clients that are still trying to manipulate reltriggers directly, but
> better to break them obviously than non-obviously. And I think a silent
> change in the column semantics has significant risk of the latter.

New version with column type change.

Initdb forced, psql, pg_dump changes also.

--
Simon Riggs www.2ndQuadrant.com
PostgreSQL Training, Services and Support

Attachment Content-Type Size
ddl_lock_reduce.v6.patch text/x-patch 71.3 KB

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