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Signed-off-by: Serena Ruan <serena.rxy@gmail.com>
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@serena-ruan Thank you for the contribution! Could you fix the following issue(s)? ⚠ DCO checkThe DCO check failed. Please sign off your commit(s) by following the instructions here. See https://github.com/mlflow/mlflow/blob/master/CONTRIBUTING.md#sign-your-work for more details. |
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Pull request overview
This PR introduces a new trace metrics API to MLflow's tracing functionality, enabling aggregated metric queries for traces, spans, and assessments with support for dimensional grouping and time-based analysis.
Key Changes
- Adds
QueryTraceMetricsRPC endpoint for querying aggregated trace metrics with filtering, grouping, and time-based aggregation capabilities - Introduces two new enums:
MetricsViewType(TRACES, SPANS, ASSESSMENTS) andAggregationType(COUNT, SUM, AVG, PERCENTILE, MIN, MAX) - Defines new message types
MetricsAggregation,QueryTraceMetrics, andMetricDataPointto support flexible metric querying
Reviewed changes
Copilot reviewed 2 out of 4 changed files in this pull request and generated 6 comments.
| File | Description |
|---|---|
| mlflow/protos/service.proto | Adds protobuf definitions for trace metrics API including RPC endpoint, enums, and message types with comprehensive field documentation |
| mlflow/protos/service_pb2.pyi | Auto-generated Python type stubs corresponding to the new protobuf definitions |
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Documentation preview for 72964d5 is available at: More info
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Signed-off-by: Serena Ruan <serena.rxy@gmail.com>
Signed-off-by: Serena Ruan <serena.rxy@gmail.com>
Signed-off-by: Serena Ruan <serena.rxy@gmail.com>
Signed-off-by: Serena Ruan <serena.rxy@gmail.com>
Signed-off-by: Serena Ruan <serena.rxy@gmail.com>
Signed-off-by: Serena Ruan <serena.rxy@gmail.com>
Signed-off-by: Serena Ruan <serena.rxy@gmail.com>
Signed-off-by: Serena Ruan <serena.rxy@gmail.com>
Signed-off-by: Serena Ruan <serena.rxy@gmail.com>
Signed-off-by: Serena Ruan <serena.rxy@gmail.com>
B-Step62
approved these changes
Dec 19, 2025
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Related Issues/PRs
#xxxWhat changes are proposed in this pull request?
Backend support for querying trace metrics.
Supported view types: traces, spans, assessments.
Supported details in code.
How is this PR tested?
Does this PR require documentation update?
Release Notes
Is this a user-facing change?
What component(s), interfaces, languages, and integrations does this PR affect?
Components
area/tracking: Tracking Service, tracking client APIs, autologgingarea/models: MLmodel format, model serialization/deserialization, flavorsarea/model-registry: Model Registry service, APIs, and the fluent client calls for Model Registryarea/scoring: MLflow Model server, model deployment tools, Spark UDFsarea/evaluation: MLflow model evaluation features, evaluation metrics, and evaluation workflowsarea/gateway: MLflow AI Gateway client APIs, server, and third-party integrationsarea/prompts: MLflow prompt engineering features, prompt templates, and prompt managementarea/tracing: MLflow Tracing features, tracing APIs, and LLM tracing functionalityarea/projects: MLproject format, project running backendsarea/uiux: Front-end, user experience, plotting, JavaScript, JavaScript dev serverarea/build: Build and test infrastructure for MLflowarea/docs: MLflow documentation pagesHow should the PR be classified in the release notes? Choose one:
rn/none- No description will be included. The PR will be mentioned only by the PR number in the "Small Bugfixes and Documentation Updates" sectionrn/breaking-change- The PR will be mentioned in the "Breaking Changes" sectionrn/feature- A new user-facing feature worth mentioning in the release notesrn/bug-fix- A user-facing bug fix worth mentioning in the release notesrn/documentation- A user-facing documentation change worth mentioning in the release notesShould this PR be included in the next patch release?
Yesshould be selected for bug fixes, documentation updates, and other small changes.Noshould be selected for new features and larger changes. If you're unsure about the release classification of this PR, leave this unchecked to let the maintainers decide.What is a minor/patch release?
Bug fixes, doc updates and new features usually go into minor releases.
Bug fixes and doc updates usually go into patch releases.