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Hi all, we are excited to announce the release of MLflow 2.19.0rc0! This release includes a number of significant features, enhancements, and bug fixes.
Major New Features
Tracing improvements - MLflow Tracing now supports both automatic and manual tracing for DSPy, LlamaIndex and Langchain flavors. Tracing feature is also auto-enabled for mlflow evaluation for all supported flavors. (#13790, #13793, #13795, #13897, @B-Step62)
New Tracing Integrations - MLflow Tracing now supports CrewAI and Anthropic, enabling a one-line, fully automated tracing experience. (#13903, @TomeHirata, #13851, @gabrielfu)
Any Type in model signature - MLflow now supports AnyType in model signature. It can be used to host any data types that were not supported before. (#13766, @serena-ruan)
Other Features:
[Tracking] Add update_current_trace API for adding tags to an active trace. (#13828, @B-Step62)
[Deployments] Update databricks deployments to support AI gateway & additional update endpoints (#13513, @djliden)
Bug fixes:
[Tracking] Allow passing in spark connect dataframes in mlflow evaluate API (#13889, @WeichenXu123)
[Tracking] Fix mlflow.end_run inside a MLflow run context manager (#13888, @WeichenXu123)
[Scoring] Fix spark_udf conditional check on remote spark-connect client or Databricks Serverless (#13827, @WeichenXu123)
[Models] Allow changing max_workers for built-in LLM-as-a-Judge metrics (#13858, @B-Step62)
[Models] Support saving all langchain runnables using code-based logging (#13821, @serena-ruan)
Documentation updates:
[Docs] Add Ollama and Instructor examples in tracing doc (#13937, @B-Step62)
For a comprehensive list of changes, see the release change log, and check out the latest documentation on mlflow.org.