On 19 September 2014 15:35, Tom Lane <t...@sss.pgh.pa.us> wrote:

> Having said that, this could reasonably be considered outside the scope
> of a patch that's trying to improve the behavior for user queries.
> But if the patch author doesn't want to expand the scope like that,
> ISTM he ought to ensure that the behavior *doesn't* change for system
> accesses, rather than trying to convince us that disabling HOT for
> system updates is a good idea.

As I said, I could make an argument to go either way, so I was unsure.

I'm happy to avoid changing behaviour for catalog scans in this patch.

 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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