v3.18.0rc2

🐛 Bug Fixes

• Resolved performance issue affecting coverage collection for Python 3.12+ in CI Visibility.
• Fixed an issue where only the first message in a Kafka batch was dispatched to Data Streams Monitoring (DSM) when consuming multiple messages.
• Fixed auto instrumented prompt templates in langchain to omit the version field unless explicitly set by the user.
• Fixed an issue in langchain where streamed responses ending before the first chunk was received would result in an IndexError.
• Corrected the description of the assessment argument in LLMObs.submit_evaluation().
• Resolved an issue in the bedrock integration where invoking cohere rerank models would result in missing spans due to output formatting index errors.
• Resolved an issue where the langchain integration would incorrectly mark Azure OpenAI calls as duplicate llm operations even if the openai integration was enabled; Azure OpenAI spans are now traced as workflow spans if an equivalent llm span from the openai integration exists.
• Resolved an issue where using async iteration with paginated openai methods caused a TypeError: 'async for' requires an object with __aiter__ method, got coroutine.
• Fixed potential KeyError exceptions in pytest runs when gevent is detected.
• Ensured that code location information is added to entry spans when Code Origin is enabled remotely.
• Resolved an issue where exceptions raised in Ray child spans were not properly recorded in the trace.
• Resolved an issue where the tracer raised an error when submitting Ray tasks without explicitly calling ray.init().
• Stopped instrumenting internal Ray actors (starting with underscore) and added ray.data._internal to the module denylist.
• Fixed an issue where using weak hashing or cipher algorithms outside of a request context in IAST could raise an unhandled exception.
• Prevents OpenTelemetry OTLP exporter connections from being traced by ddtrace by excluding ddtrace internal connections from tracing.
• Fixed circular import when enabling multiple OpenTelemetry signals (metrics + logs) simultaneously.
• Fixed a potential race condition in the tracer.
• Fixed AssertionError exceptions being silently suppressed in the Lock profiler's _acquire method (when assertions are enabled).
• Introduced DD_PROFILING_API_TIMEOUT_MS environment variable to configure profile upload timeout; DD_PROFILING_API_TIMEOUT is marked for removal.
• Upgraded echion to resolve an issue where stack profiler could allocate excessive memory and another issue causing infinite loops on Python 3.13.
• Fixed the Python Detector regular expression to detect paths ending with only the major version number.
• Fixed ddtrace internal logging when trace-log correlation is disabled, preventing ValueError: Formatting field not found in record: 'dd.service'.
• Ensures compatibility with wrapt 2.0.0.
• Fix compatibility with zope.event==6.0, resolving an issue where an application instrumented by ddtrace could crash at start.