mason: require mlflow>=3.10.1 for tracing (was 3.9.0) - #549
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elainewang-db merged 2 commits intoSep 4, 2026
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mason tracing setup uses UC trace destinations (set_experiment_trace_location, UCSchemaLocation), which is why users hit 'This MLflow version is too old'. The tracing extra floored mlflow at >=3.9.0 while both runtime extras already require >=3.10.1 — bump tracing (and its install hints) to match. Co-authored-by: Isaac <no-reply@databricks.com>
The missing/too-old-mlflow errors told users to pip install a bare mlflow, but what actually fixes both cases is installing the extra — it carries the version floor mason tracing needs and upgrades a stale mlflow already in the venv. Co-authored-by: Isaac <no-reply@databricks.com>
junchoi-db
approved these changes
Sep 4, 2026
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mason tracing setup uses UC trace destinations (set_experiment_trace_location, UCSchemaLocation), which is why users hit 'This MLflow version is too old'. The tracing extra floored mlflow at >=3.9.0 while both runtime extras already require >=3.10.1 — bump tracing (and its install hints) to match.