> On Mon, Jul 1, 2013 at 11:16 PM, Tatsuo Ishii <ishii@postgresql.org> wrote:
>> Now that we have COPY FREEZE, I'm thinking about adding similar option
>> to creating large objects. In 9.3 the maximum size of large objects
>> are increased. That means, the first access to a large object will
>> trigger more writes because of hint bit updation. Also subsequent
>> VACUUM may trigger that as well. If we could freeze arge objects while
>> creating, it could reduce the writes dramatically as COPY FREEZE
>> already does.
>>
>> Opinions?
>
> COPY FREEZE only works if the table was created in the same
> transaction. Otherwise, an error midway through could leave the table
> and index inconsistent. I think that's a killer for this proposal,
> because obviously when a large object is created, pg_largeobject will
> be pre-existing.
Argh. You are right.
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp