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robin.bygrave
eee26d9ed3
So the desire here is to better support sending metrics to Prometheus style metrics collectors that prefer CUMULATIVE metrics rather than DELTA based metrics. To do this, expose additional MetaInfoManager.collectMetrics(reset) method. In supporting this, the MAX value really does need to reset even with CUMULATIVE metrics and act more like a gauge as otherwise it becomes almost useless as the max value over the lifetime. So we need to adjust MAX to always reset and act like a gauge to be useful in this CUMULATIVE metrics reporting mode.