qingwei91 commented on code in PR #21403:
URL: https://github.com/apache/flink/pull/21403#discussion_r1032920245
##########
flink-metrics/flink-metrics-prometheus/src/main/java/org/apache/flink/metrics/prometheus/AbstractPrometheusReporter.java:
##########
@@ -378,6 +390,22 @@ private void addSamples(
addToList(labelValues, quantile.toString()),
statistics.getQuantile(quantile)));
}
+ if (this.histogramMaxEnabled) {
+ samples.add(
+ new MetricFamilySamples.Sample(
+ metricName,
+ labelNamesWithQuantile,
+ addToList(labelValues, "1.0"),
+ statistics.getMax()));
+ }
+ if (this.histogramMinEnabled) {
+ samples.add(
+ new MetricFamilySamples.Sample(
+ metricName,
+ labelNamesWithQuantile,
+ addToList(labelValues, "0.0"),
+ statistics.getMin()));
+ }
Review Comment:
Core of the changes, emit max as 1.0 and min as 0.0 when reporting to
prometheus
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