public void setMaxOutOrderness(Integer maxOutOrderness) {
        if(maxOutOrderness == null){
            return;
        }

        this.maxOutOrderness = maxOutOrderness;
    }
Reason:
Date: 2018/6/25
Company: www.dtstack.com
@author xuchao
core/src/main/java/com/dtstack/flink/sql/table/AbstractSourceTableInfo.java