jcoffey-dev is traveling from Thursday 1 October through Sunday 4 October. Issues and pull requests are welcome, and will get an answer after that. Thanks for your patience.
queue.count, user.count and domain.count count the whole cluster, and
only the node with the metrics-calculation role works them out. Every
node still stored them. On the others the queue gauge only moves with
local queue events, so it had drifted below zero (production: node 0 at
18,446,744,073,709,551,596, node 1 at ...613, i.e. -20 and -3), and
the account and domain counts stayed at 0. A reader taking the latest
reading got whichever node wrote last.
sample() now takes whether the node calculates them and leaves them out
otherwise. A unit test covers both cases.
jcoffey-dev