Incorrect Metric Mapping for jvm.loaded_classes

[koontzjlc]

The OpenTelemetry metric process.runtime.jvm.classes.loaded is mapped to the Datadog metric jvm.loaded_classes (source).

Per the OpenTelemetry semantic conventions this metric is a monotonic counter that measures the total number of classes loaded since JVM start. The Datadog metric jvm.loaded_classes is a gauge that measures the current number of loaded classes (source), which corresponds to the OpenTelemetry metric process.runtime.jvm.classes.current_loaded.

[songy23]

cc @liustanley

[liustanley]

@koontzjlc Thanks for flagging this! I'll update this mapping to be included in the next release.