Re: Set new system identifier using pg_resetxlog

On 18/06/14 19:26, Robert Haas wrote:
> On Wed, Jun 18, 2014 at 12:54 PM, Andres Freund <andres@2ndquadrant.com> wrote:
>> I don't see how the proposed ability makes it more dangerous. It
>> *already* has the ability to reset the timelineid. That's the case where
>> users are much more likely to think about resetting it because that's
>> much more plausible than taking a unrelated cluster and resetting its
>> sysid, timeline and LSN.
>
> All right, well, I've said my piece.  I don't have anything to add to
> that that isn't sheer repetition.  My vote is to hold off on this
> until we've talked about replication identifiers and other related
> topics in more depth.  But if that position doesn't garner majority
> support ... so be it!
>

I am not sure I get what does this have to do with replication 
identifiers. The patch has several use-cases, one of them has to do that 
you can know the future system id before you set it, which is useful for 
automating some things...

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