title: Mongo error detected during query over particluar collection
body: <p>In mongo server over a collection with huge data an error is thrown and multiple concurrent connections are opened and not getting closed.</p>
  
  <p>Error :</p>
  
  <p>Mongo error detected during fetching data query over a particular collection { $err: "unauthorized db: collection lock type:0 ", code: 10057 }</p>
  
  <p>ClientCursor::find(): cursor not found in map -1 (ok after a drop)</p>
  
  <p>Any thoughts what could be causing the problem.</p>
  
  <p>Mongo version:2.2.0</p>