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Require that names and namespaces are one global space across all semantic convention areas #832

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Aug 24, 2020
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Require that names and namespaces are one global space across all semantic convention areas #832

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Require that names and namespaces are one global space across all sem…
Aug 19, 2020
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Address PR comments
Aug 19, 2020
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Merge branch 'master' into feature/tigran/unique-semantic-conv-area
bogdandrutu Aug 24, 2020
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9 changes: 9 additions & 0 deletions specification/common/common.md
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Expand Up @@ -90,6 +90,15 @@ Names SHOULD follow these rules:
- When a new namespace is necessary consider whether it should be a top-level
namespace (e.g. `service`) or a nested namespace (e.g. `service.instance`).

- Semantic conventions exist for four areas: for Resource, Span and Log
attribute names as well as Metric label keys. In addition, for spans we have
two more areas: Event and Link attribute names. Identical namespaces or names
in all these areas MUST have identical meanings. For example the `http.method`
span attribute name denotes exactly the same concept as the `http.method`
metric label, has the same data type and the same set of possible values (in
both cases it records the value of the HTTP protocol's request method as a
string).

- Semantic conventions MUST limit names to printable Basic Latin characters
(more precisely to
[U+0021 .. U+007E](https://en.wikipedia.org/wiki/Basic_Latin_(Unicode_block)#Table_of_characters)
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