title: ERROR "pinging failed for distributed lock pinger :: caused by :: LockStateChangeFailed: findAndModify query predicate didn't match any lock document"
body: <p>Have setup the config server and the replicate set. But I am unable to start mongos. The following error appears</p>
  
  <p>ERROR "pinging failed for distributed lock pinger :: caused by :: LockStateChangeFailed: findAndModify query predicate didn't match any lock document"</p>