in copy_set() line 3073 of /src/slon/remote_worker.c

uses DELETE rather than TRUNCATE prior to COPY


So some optimizations here could be
- use TRUNCATE to speed up refreshing a copy operation
- this will then allow (from 8.3 onwards) fast COPY mode

It's possible you've decided we don't need that part to be optimized,
which is OK, I'm just pointing out what's possible.

-- 
  Simon Riggs
  2ndQuadrant  http://www.2ndQuadrant.com