docs(otel): document metric attribute cardinality control#337
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yassin-berriai merged 2 commits intoJun 13, 2026
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Add a "Control metric attribute cardinality" section to the OpenTelemetry page covering the callback_settings.otel.attributes include_list/exclude_list filter that caps how many attributes get stamped onto gen_ai.client.* metrics, plus a row for the new attributes field in the OpenTelemetryConfig reference table. Pairs with BerriAI/litellm#30257 (LIT-3600)
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…not filterable Reflect the implementation: gen_ai.token.type is a structural token-usage discriminator stamped after filtering, so listing it in include_list or exclude_list is rejected at startup rather than silently ignored. Remove it from the include_list example and the valid-names list, and correct the nuance note.
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Documents the OTEL metric attribute cardinality control added in BerriAI/litellm#30257 (LIT-3600).
Adds a "Control metric attribute cardinality" section to the OpenTelemetry page explaining how per-request attributes such as hidden_params and the metadata.* fields inflate metric time series and get throttled by backends like Splunk, then shows the callback_settings.otel.attributes block with the mutually-exclusive include_list and exclude_list, copy-pasteable YAML for both modes, the metrics-only scope, and the full list of valid attribute names. Also adds the attributes field to the OpenTelemetryConfig reference table.