1fanwang commented on code in PR #71564:
URL: https://github.com/apache/airflow/pull/71564#discussion_r3798854145
##########
airflow-core/docs/administration-and-deployment/logging-monitoring/metrics.rst:
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@@ -98,6 +98,42 @@ Add the Collector details to your configuration file e.g.
``airflow.cfg``
`SDK environment variable documentation
<https://opentelemetry.io/docs/specs/otel/configuration/sdk-environment-variables/#periodic-exporting-metricreader>`_
for more information.
+Replicated components
+---------------------
+
+Every Airflow process reports the same ``service.name``, so a deployment
running more than one
+replica of a component — schedulers in high availability, several triggerers
or Dag processors —
+sends telemetry the backend cannot attribute to an individual process.
+
+Gauges are where this shows up in the data. Each scheduler samples the
metadata database on its
+own loop and exports a value for the same series, so ``pool.open_slots`` and
its siblings keep
Review Comment:
done
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