After changing a member in a shard replicaset to hidden:true mongos does not close existing connections for slaveOk queries, and still issues queries on those connections.
Issuing a flushRouterConfig should fix this when done to each mongos.
After changing a member in a shard replicaset to hidden:true mongos does not close existing connections for slaveOk queries, and still issues queries on those connections.
Issuing a flushRouterConfig should fix this when done to each mongos.