On 06/11/14 11:22, Craig Ringer wrote:
> On 11/05/2014 05:01 AM, Petr Jelinek wrote:
>> I guess I could port BDR sequences to this if it would help (once we
>> have bit more solid agreement that the proposed API at least
>> theoretically seems ok so that I don't have to rewrite it 10 times if at
>> all possible).
>
> Because the BDR sequences rely on all the other BDR machinery I suspect
> that'd be a pretty big thing to review and follow for someone who
> doesn't know the BDR code.
>
> Do you think it'd be simple to provide a blocking, transactional
> sequence allocator via this API? i.e. gapless sequences, much the same
> as typically implemented with SELECT ... FOR UPDATE on a counter table.
>
> It might be more digestible standalone, and would be a handy contrib/
> example extension demonstrating use of the API.
>
Yes I think that's doable (once we iron out the API we can agree on).
-- Petr Jelinek http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training &
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