private void addReplicationFactor(Operation op){
  op.addRequestHeader(Operation.REPLICATION_QUORUM_HEADER,Operation.REPLICATION_QUORUM_HEADER_VALUE_ALL);
}

private void addReplicationFactor ( Operation op ) { op . addRequestHeader ( Operation . REPLICATION_QUORUM_HEADER , Operation . REPLICATION_QUORUM_HEADER_VALUE_ALL ) ; }
authorization related operations should take effect on all replicas , before they complete . this method adds a special header that sets the quorum level to all available nodes , avoiding a race where a client can reach a node that has not yet received latest authorization changes , even if it received success from this auth helper class
