fix: map Python CRITICAL log level to OTel FATAL severity text#4365
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xrmx merged 5 commits intoopen-telemetry:mainfrom Apr 1, 2026
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…trib handler The OTel specification defines the severity text for the highest severity range as "FATAL", but the contrib logging handler was passing through Python's native "CRITICAL" level name unchanged. This mirrors the fix made in open-telemetry/opentelemetry-python#5011 for the SDK handler. Related: open-telemetry/opentelemetry-python#4984
lzchen
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Mar 26, 2026
tammy-baylis-swi
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Mar 26, 2026
emdneto
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Mar 26, 2026
xrmx
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Apr 1, 2026
xrmx
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Apr 1, 2026
…telemetry/instrumentation/logging/handler.py
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Summary
CRITICALlog level to OTel'sFATALseverity text in the contrib logging handlerWARNING→WARNFATALinstead ofCRITICALRelated: open-telemetry/opentelemetry-python#4984
Test plan
test_handler.pyassertions from"CRITICAL"to"FATAL"