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Add recommendation that attribute keys should be lowercase #586

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arminru opened this issue Dec 6, 2023 · 1 comment · Fixed by #788
Closed

Add recommendation that attribute keys should be lowercase #586

arminru opened this issue Dec 6, 2023 · 1 comment · Fixed by #788
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@arminru
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arminru commented Dec 6, 2023

In open-telemetry/opentelemetry-specification#3782 it was brought up that the (de-facto) case sensitivity of attribute keys is not documented. A clarification on that will likely be added to the spec (open-telemetry/opentelemetry-specification#3784).

In our attribute naming guidelines at https://github.com/open-telemetry/semantic-conventions/blob/main/docs/general/attribute-naming.md#attribute-naming, we do not cover casing. It is implied to some extent since all examples are lowercase and so are all currently defined keys in semantic conventions, but we might want to call that out explicitly.

@joaopgrassi
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I opened a PR for it #788

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