v4.6.0rc2

New Features

• AI Guard: Adds SDS (Sensitive Data Scanner) findings to AI Guard spans, enabling visibility into sensitive data detected in LLM inputs and outputs.

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• LLM Observability: Adds support for DeepEval evaluations in LLM Observability Experiments by allowing users to pass a DeepEval evaluation (which either inherents from BaseMetric or BaseConversationalMetric) in an LLM Obs Experiment.

  Example:

  from deepeval.metrics import GEval
  from deepeval.test_case import LLMTestCaseParams
  
  from ddtrace.llmobs import LLMObs
  
  correctness_metric = GEval(
      name="Correctness",
      criteria="Determine whether the actual output is factually correct based on the expected output.",
      evaluation_steps=[
          "Check whether the facts in 'actual output' contradicts any facts in 'expected output'",
          "You should also heavily penalize omission of detail",
          "Vague language, or contradicting OPINIONS, are OK"
      ],
      evaluation_params=[LLMTestCaseParams.INPUT, LLMTestCaseParams.ACTUAL_OUTPUT, LLMTestCaseParams.EXPECTED_OUTPUT],
      async_mode=True
  )
  
  dataset = LLMObs.create_dataset(
      dataset_name="<DATASET_NAME>",
      description="<DATASET_DESCRIPTION>",
      records=[RECORD_1, RECORD_2, RECORD_3, ...]
  )
  
  def my_task(input_data, config):
      return input_data["output"]
  
  def my_summary_evaluator(inputs, outputs, expected_outputs, evaluators_results):
      return evaluators_results["Correctness"].count(True)
  
  experiment = LLMObs.experiment(
      name="<EXPERIMENT_NAME>",
      task=my_task, 
      dataset=dataset,
      evaluators=[correctness_metric],
      summary_evaluators=[my_summary_evaluator], # optional, used to summarize the experiment results
      description="<EXPERIMENT_DESCRIPTION>."
  )
  
  result = experiment.run()
  

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• LLM Observability: adds experiment summary logging after run() with row count, run count, per-evaluator stats, and error counts.

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• LLM Observability: adds max_retries and retry_delay parameters to experiment.run() for retrying failed tasks and evaluators. Example: experiment.run(max_retries=3, retry_delay=lambda attempt: 2 ** attempt).

Bug Fixes

• AAP: Fixes a memory corruption issue where concurrent calls to the WAF on the same request context from multiple threads (e.g. an asyncio event loop and a thread pool executor inheriting the same context via contextvars) could cause use-after-free or double-free crashes (SIGSEGV) inside libddwaf. A per-context lock now serializes WAF calls on the same context.

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• tracing: Avoid pickling wrappers in ddtrace.internal.wrapping.context.BaseWrappingContext.

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• CI Visibility: Fixed an incompatibility with pytest-html and other third-party reporting plugins caused by the ddtrace pytest plugin using a non-standard dd_retry test outcome for retry attempts. The outcome is now set to rerun, which is the standard value used by pytest-rerunfailures and recognized by reporting plugins.

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• dynamic instrumentation: Fixes a RuntimeError: generator didn't yield in the Symbol DB remote config subscriber when the process has no writable temporary directory.

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• profiling: A bug that would cause certain function names to be displayed as <module> in flame graphs has been fixed.