Mongo mongo = new Mongo(parts[0], port);
// figure out if we can read from this server
// allow reading from secondaries
mongo.slaveOk();
String database = conf.get("mongo.input.database");
String collection = conf.get("mongo.input.collection");
String query = conf.get("mongo.input.query", "");
String select = conf.get("mongo.input.select","");