Once the new pageviews definition has been QAd, make one final run of the sampled logs, ending up with:
YYYYMMDDHH -- country_iso -- country_name -- project -- access_method -- is_spider -- is_automata -- referer_class -- pageviews
This will allow us to obliterate the sampled logs and also give us the data from January 2015, which the non-sampled logs no longer have.