private ProcessingTimeService getProcessingTimeService() {
        return ((StreamingRuntimeContext) this.runtimeContext).getProcessingTimeService();
    }
All interfaces inherit naming rules: type + "AsyncReqRow" such as == "MysqlAsyncReqRow
only support Left join / inner join(join),not support right join
Date: 2018/7/9
Company: www.dtstack.com

@author xuchao
core/src/main/java/com/dtstack/flink/sql/side/BaseAsyncReqRow.java