Exempt resources from attribute limits #1892
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From the metric perspective, resource attributes also need to be exempt from limits because they are part of the metric stream identity https:/open-telemetry/opentelemetry-specification/blob/main/specification/metrics/datamodel.md#opentelemetry-protocol-data-model
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Ping @iNikem @open-telemetry/specs-metrics-approvers |
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Related issue for metrics: #1782 |
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Spec modification as proposed by this PR nicely described why resource attributes CAN be excluded from attribute limits. But it does not explain why they SHOULD or why do we want to have such an exception. PR description has some justification:
Are current attribute limits specific/scoped into |
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This PR was marked stale due to lack of activity. It will be closed in 7 days. |
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@iNikem Yes, I can confirm at least Java, Python, Go and Node/JS do this. |
Resources are not susceptible to scenarios where excessive attributes can be recorded unlike Spans. Resources are also immutable and it can be hard for some SDKs to apply the limits at source at the time the attributes are added to a resource. Furthermore, limits and Resources both are generally defined and passed on to a TracerProvider which forces a TracerProvider to either mutate the resource or generate a new one with duplicate attributes in order to apply the limits to it.
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@iNikem added. |
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Ping @jsuereth |
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Reviewers, please respond to unresolved comments. If you want to block merging then request changes, otherwise I am going to merge this since it has the required number of approvals. |
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No further comments, merging. |
Resources are not susceptible to scenarios where excessive attributes
can be recorded unlike Spans. Resources are also immutable and it can be
hard for some SDKs to apply the limits at source at the time the
attributes are added to a resource. Also Limits and Resources
both are generally defined and passed on to a TracerProvider which
forces a TracerProvider to either mutate the resource or generate a new
one with duplicate attributes in order to apply the limits to it.
I propose we explicitly exempt Resources from attribute limits.
Changes
Exempt Resources from attribute limits.