public void incSumStats(String key) {
            LongAdder statsItem = sumMap.get(key);
            if (statsItem == null) {
                LongAdder tmpItem = new LongAdder();
                statsItem = sumMap.putIfAbsent(key, tmpItem);
                if (statsItem == null) {
                    statsItem = tmpItem;
                }
            }
            statsItem.increment();
        }
add detail statistic items

@param detailKey the detail key
inlong-dataproxy/dataproxy-source/src/main/java/org/apache/inlong/dataproxy/metrics/stats/MonitorStats.java