Random "error 16550: not authorized for query on db_name.collection_name"

[iabdulin]

Sorry, I can't reproduce this myself, but I receive a lot of exception notification emails from my server (NewRelicPinger pings my website every couple minutes).

Moped 1.5.1 (also tried 1.4.5)
mongoid 3.1.6
mongodb 2.4.8

Maybe it's related to #247, but I am not sure (I don't use any replica sets).

See https://github.com/mongodb/mongo/blob/master/docs/errors.md
for details about this error.
vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/node.rb:370:in `block in query'

---

Backtrace:

vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/node.rb:370:in block in query' vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/node.rb:573:in[]'
vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/node.rb:573:in block (3 levels) in flush' vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/node.rb:572:inmap'
vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/node.rb:572:in block (2 levels) in flush' vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/node.rb:138:inensure_connected'
vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/node.rb:568:in block in flush' vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/node.rb:583:inlogging'
vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/node.rb:567:in flush' vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/node.rb:556:inprocess'
vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/node.rb:358:in query' vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/session/context.rb:44:inblock in query'
vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/session/context.rb:105:in block in with_node' vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/cluster.rb:250:inwith_secondary'
vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/session/context.rb:104:in with_node' vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/session/context.rb:43:inquery'
vendor/bundle/ruby/2.1.0/bundler/gems/moped-675440c65f44/lib/moped/query.rb:115:in first' vendor/bundle/ruby/2.1.0/gems/mongoid-3.1.6/lib/mongoid/contextual/mongo.rb:278:inblock in last'
vendor/bundle/ruby/2.1.0/gems/mongoid-3.1.6/lib/mongoid/contextual/mongo.rb:527:in with_inverse_sorting' vendor/bundle/ruby/2.1.0/gems/mongoid-3.1.6/lib/mongoid/contextual/mongo.rb:277:inlast'
vendor/bundle/ruby/2.1.0/gems/mongoid-3.1.6/lib/mongoid/contextual.rb:19:in last' vendor/bundle/ruby/2.1.0/gems/mongoid-3.1.6/lib/mongoid/finders.rb:127:inlast'

[mgwidmann]

I'm seeing the same thing in conjunction with the bcdatabase gem. When encrypted we get this problem, when not encrypted everything works fine. If we use the wrong password we get an auth fails message (plus I am able to decrypt it via the rails console), so it doesn't seem to be related to bcdatabase.

[arthurnn]

closing this as #324 was merged and it should solve this issue