Attempting to remove empty, temporary Map Reduce collections fails (tried deleting collections in a variety of ways, none of which work):

db.runCommand(

{drop: 'tmp.mr.foo_12980807563244151_25433_inc'}

)

{ "errmsg" : "ns not found", "ok" : 0 }

Output from command:

Mon Mar 21 17:23:49 [conn326] query: test.$cmd

{ drop: "tmp.mr.foo_12980807563244151_25433_inc" }

Mon Mar 21 17:23:49 [conn326] run command test.$cmd

{ drop: "tmp.mr.foo_12980807563244151_25433_inc" }

Mon Mar 21 17:23:49 [conn326] CMD: drop test.tmp.mr.foo_12980807563244151_25433_inc
Mon Mar 21 17:23:49 [conn326] query test.$cmd ntoreturn:1 command:

{ drop: "tmp.mr.foo_12980807563244151_25433_inc" }

reslen:78 0ms

I've tried dropping these collections through mongos as well as by logging in directly through the masters of each replica set.