@Override
                    public Connection run() throws SQLException {
                        return DriverManager.getConnection(url);
                    }
side operator with cache for all(period reload)
Date: 2019/11/12
Company: www.dtstack.com

@author xiuzhu
impala/impala-side/impala-all-side/src/main/java/com/dtstack/flink/sql/side/impala/ImpalaAllReqRow.java