Under 1.2.19, we've taken down the database to do some maintenance - after bringing it up again, Boost is no longer working, and Graphs are not updated. We've also encountered 1788 "poller_output_boost_arch_*"-tables in our database.

After some research about the problem, we've came across https://forums.cacti.net/viewtopic.php?f=21&t=62057 .

So, we've updated both cacti and spine to 1.2.21, to no avail.