question: returns the connection from a zookeeper cluster string . concode_field_sep PlaceHolder placeHolder concode_field_sep Connection getInputConnection concode_elem_sep Connection getInputConnection concode_elem_sep Connection getOutputConnection concode_elem_sep Connection getOutputConnection
target: Connection function ( final String arg0 , Properties arg1 ) { Preconditions . checkNotNull ( arg0 ) ; return DriverManager . getConnection ( QueryUtil . getUrl ( arg0 ) , arg1 ) ; }