grafana/tempo

Derived metrics are missing HELP documentation

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#1,974 opened on Jan 5, 2023

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Priority Lowcomponent/metrics-generatorhelp wantedkeepalive

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Description

Describe the bug We're using the Metrics Generator But the metrics generated have no HELP text or metadata associated with them in Grafana-Cloud Prometheus datasource:

From @danielkenlee

I was exploring some trace metrics in the metrics browser today on a customer instance and noticed the help documentation doesn't seem to be loading into the metrics data source for Tempo Metrics Generator metrics. See example for traces_spanmetrics_size_total - here I might expect some details about dimensions (kb, Mbs etc.) Upon hovering over traces_spanmetrics_size_total the popup simply repeats the metric name. Is this behaviour intended? Should help text appear here?

To Reproduce

Use the metrics generator as per: https://grafana.com/blog/2022/05/02/new-in-grafana-tempo-1.4-introducing-the-metrics-generator/

Then try to access the metadata for the derived metrics, and see that it is missing.

Expected behavior In the Metrics Browser, when I hover the metric name for a Temp Derived metric, the HELP text should be available

Environment:

  • Infrastructure: GrafanaCloud

Additional Context None

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