void refreshLastRecordedTime() {
            this.lastRecordedTimeNano = System.nanoTime();
        }
This gauge measures the elapsed time between now and last recorded time set by {@link
ElapsedTimeGauge#refreshLastRecordedTime()}.
inlong-sort/sort-flink/sort-flink-v1.15/sort-connectors/iceberg/src/main/java/org/apache/inlong/sort/iceberg/sink/IcebergFilesCommitterMetrics.java