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Log a warning for duplicate instrument creation from the No-op Meter #3565

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MrAlias opened this issue Jan 5, 2023 · 4 comments
Closed

Log a warning for duplicate instrument creation from the No-op Meter #3565

MrAlias opened this issue Jan 5, 2023 · 4 comments
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area:metrics Part of OpenTelemetry Metrics pkg:API Related to an API package

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@MrAlias
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MrAlias commented Jan 5, 2023

The OpenTelemetry metric API specification states:

When more than one distinct Instrument is registered with the same name for identical Meters, the implementation SHOULD emit a warning to the user informing them of duplicate registration conflict(s).

Currently our noopMeter does not do this. It needs to be updated to log a warning, similar to the SDK, to comply with the specification.
@MrAlias MrAlias added pkg:API Related to an API package area:metrics Part of OpenTelemetry Metrics labels Jan 5, 2023
@MrAlias MrAlias added this to the Metric v0.35.0 milestone Jan 5, 2023
@MrAlias MrAlias mentioned this issue Jan 5, 2023
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@MrAlias
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MrAlias commented Jan 9, 2023

This is likely not what we want to do. Logging a warning would be compliant with the specification, but it would result in a poor user experience. The user that uses a no-op implementation to effectively disable OTel will still be annoyed with warnings from bad instrumentation.

@MrAlias
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MrAlias commented Jan 9, 2023 •
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Blocked by open-telemetry/opentelemetry-specification#3071

The resolution of that issue should explicitly define the no-op implementation. Hopefully, one without logging.

@MrAlias MrAlias removed this from the Metric v0.35.0 milestone Jan 19, 2023
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MrAlias commented Feb 2, 2023

Related specification PR: open-telemetry/opentelemetry-specification#3171

This was referenced Feb 2, 2023
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MrAlias commented Feb 14, 2023

The specification no longer requires this: open-telemetry/opentelemetry-specification#3171

@MrAlias MrAlias closed this as completed Feb 14, 2023
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area:metrics Part of OpenTelemetry Metrics pkg:API Related to an API package
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