Histogram Min/Max values do no publish via Prometheus Exporter

[Deniz]

Hi,

I have been querying metrics endpoint for the Prometheus exporter by using the URL template [host:port/metrics] which is localhost/metrics by default in my setup. I could not see the min/max for my Histograms values in the response of Prometheus exporter (OpenTelemetry.Exporter.Prometheus.AspNetCore package version 1.4.0-rc.2), however they exists in the Console Exporter output. I wonder if it's something with the Prometheus Exporter (not supported yet?) or something I overlooked?

Thanks,

[cijothomas]

Not supported in Prometheus

[Deniz]

Anything in the roadmap to support this in future that I can follow also @cijothomas?

[cijothomas]

https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/compatibility/prometheus_and_openmetrics.md#histograms-1 There is no mapping defined in the spec about what to do with Min/Max for Prometheus...