On 08/19/2014 06:21 PM, Andres Freund wrote:
> What's the problem with the COMMIT WITH (report_lsn on) I've proposed?
> Reporting the LSN in the command tag? Anything doing transparent
> failover needs to be aware of transaction boundaries anyway. 

Tom's objection to a GUC applies there too - a client app can send that
when the underlying driver doesn't expect to get the results.

I'm not completely convinced that's a problem - oh dear, the app breaks.
The answer to so many other things in Pg is "well, don't do that then"
that I don't see this as overly different.

However, granting that it is a problem, the same objection to a GUC
applies to this too.
 Craig Ringer                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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