@Override
    public void clear() {
        this.count.clear();
        this.min.clear();
        this.max.clear();
        for (int i = 0; i < NUM_BUCKETS; i++) {
            this.buckets[i].clear();
        }
    }
Initial Exponential Statistics for Time Histogram

@param metricName   metric name
@param prefix       the prefix of metric item
inlong-tubemq/tubemq-core/src/main/java/org/apache/inlong/tubemq/corebase/metric/impl/ESTHistogram.java