@Override
    public void clear() {
        this.value.set(Long.MAX_VALUE);
    }
LongMinGauge, store min value information.

The metric includes a atomic long value, to store the current min value.
inlong-tubemq/tubemq-core/src/main/java/org/apache/inlong/tubemq/corebase/metric/impl/LongMinGauge.java