feat(sdk)!: stop auto-populating metrics as dag output

sdk/RELEASE.md

@@ -7,6 +7,7 @@
 ## Breaking changes
 
 ## Deprecations
+* Deprecate the metrics artifact auto-populating feature. [\#11362](https://github.com/kubeflow/pipelines/pull/11362)
 
 ## Bug fixes and other changes
 

sdk/python/kfp/compiler/pipeline_spec_builder.py

@@ -1131,67 +1131,6 @@ def build_task_spec_for_group(
     return pipeline_task_spec
 
 
-def populate_metrics_in_dag_outputs(
-    tasks: List[pipeline_task.PipelineTask],
-    task_name_to_parent_groups: Mapping[str,
-                                        List[compiler_utils.GroupOrTaskType]],
-    task_name_to_component_spec: Mapping[str, pipeline_spec_pb2.ComponentSpec],
-    pipeline_spec: pipeline_spec_pb2.PipelineSpec,
-) -> None:
-    """Populates metrics artifacts in DAG outputs.
-
-    Args:
-        tasks: The list of tasks that may produce metrics outputs.
-        task_name_to_parent_groups: The dict of task name to parent groups.
-            Key is the task's name. Value is a list of ancestor groups including
-            the task itself. The list of a given op is sorted in a way that the
-            farthest group is the first and the task itself is the last.
-        task_name_to_component_spec: The dict of task name to ComponentSpec.
-        pipeline_spec: The pipeline_spec to update in-place.
-    """
-    for task in tasks:
-        component_spec = task_name_to_component_spec[task.name]
-
-        # Get the tuple of (component_name, task_name) of all its parent groups.
-        parent_components_and_tasks = [('_root', '')]
-        # skip the op itself and the root group which cannot be retrived via name.
-        for group_name in task_name_to_parent_groups[task.name][1:-1]:
-            parent_components_and_tasks.append(
-                (utils.sanitize_component_name(group_name),
-                 utils.sanitize_task_name(group_name)))
-        # Reverse the order to make the farthest group in the end.
-        parent_components_and_tasks.reverse()
-
-        for output_name, artifact_spec in \
-            component_spec.output_definitions.artifacts.items():
-
-            if artifact_spec.artifact_type.WhichOneof(
-                    'kind'
-            ) == 'schema_title' and artifact_spec.artifact_type.schema_title in [
-                    artifact_types.Metrics.schema_title,
-                    artifact_types.ClassificationMetrics.schema_title,
-            ]:
-                unique_output_name = f'{task.name}-{output_name}'
-
-                sub_task_name = task.name
-                sub_task_output = output_name
-                for component_name, task_name in parent_components_and_tasks:
-                    group_component_spec = (
-                        pipeline_spec.root if component_name == '_root' else
-                        pipeline_spec.components[component_name])
-                    group_component_spec.output_definitions.artifacts[
-                        unique_output_name].CopyFrom(artifact_spec)
-                    group_component_spec.dag.outputs.artifacts[
-                        unique_output_name].artifact_selectors.append(
-                            pipeline_spec_pb2.DagOutputsSpec
-                            .ArtifactSelectorSpec(
-                                producer_subtask=sub_task_name,
-                                output_artifact_key=sub_task_output,
-                            ))
-                    sub_task_name = task_name
-                    sub_task_output = unique_output_name
-
-
 def modify_pipeline_spec_with_override(
     pipeline_spec: pipeline_spec_pb2.PipelineSpec,
     pipeline_name: Optional[str],
@@ -1494,14 +1433,6 @@ def build_spec_by_group(
     pipeline_spec.deployment_spec.update(
         json_format.MessageToDict(deployment_config))
 
-    # Surface metrics outputs to the top.
-    populate_metrics_in_dag_outputs(
-        tasks=group.tasks,
-        task_name_to_parent_groups=task_name_to_parent_groups,
-        task_name_to_component_spec=task_name_to_component_spec,
-        pipeline_spec=pipeline_spec,
-    )
-
 
 def modify_task_for_ignore_upstream_failure(
     task: pipeline_task.PipelineTask,

sdk/python/test_data/components/output_metrics.yaml

@@ -3,7 +3,6 @@
 # Description: Dummy component that outputs metrics with a random accuracy.
 # Outputs:
 #    metrics: system.Metrics
-#    output-metrics-metrics: system.Metrics
 components:
   comp-output-metrics:
     executorLabel: exec-output-metrics
@@ -27,7 +26,7 @@ deploymentSpec:
         - -c
         - "\nif ! [ -x \"$(command -v pip)\" ]; then\n    python3 -m ensurepip ||\
           \ python3 -m ensurepip --user || apt-get install python3-pip\nfi\n\nPIP_DISABLE_PIP_VERSION_CHECK=1\
-          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.7.0'\
+          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.9.0'\
           \ '--no-deps' 'typing-extensions>=3.7.4,<5; python_version<\"3.9\"' && \"\
           $0\" \"$@\"\n"
         - sh
@@ -56,10 +55,6 @@ root:
           artifactSelectors:
           - outputArtifactKey: metrics
             producerSubtask: output-metrics
-        output-metrics-metrics:
-          artifactSelectors:
-          - outputArtifactKey: metrics
-            producerSubtask: output-metrics
     tasks:
       output-metrics:
         cachingOptions:
@@ -74,9 +69,5 @@ root:
         artifactType:
           schemaTitle: system.Metrics
           schemaVersion: 0.0.1
-      output-metrics-metrics:
-        artifactType:
-          schemaTitle: system.Metrics
-          schemaVersion: 0.0.1
 schemaVersion: 2.1.0
-sdkVersion: kfp-2.7.0
+sdkVersion: kfp-2.9.0

sdk/python/test_data/pipelines/lightweight_python_functions_with_outputs.yaml

@@ -5,8 +5,6 @@
 #    first_number: int
 #    second_message: str
 #    second_number: int
-# Outputs:
-#    output-named-tuple-metrics: system.Metrics
 components:
   comp-add-numbers:
     executorLabel: exec-add-numbers
@@ -81,7 +79,7 @@ deploymentSpec:
         - -c
         - "\nif ! [ -x \"$(command -v pip)\" ]; then\n    python3 -m ensurepip ||\
           \ python3 -m ensurepip --user || apt-get install python3-pip\nfi\n\nPIP_DISABLE_PIP_VERSION_CHECK=1\
-          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.7.0'\
+          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.9.0'\
           \ '--no-deps' 'typing-extensions>=3.7.4,<5; python_version<\"3.9\"' && \"\
           $0\" \"$@\"\n"
         - sh
@@ -110,7 +108,7 @@ deploymentSpec:
         - -c
         - "\nif ! [ -x \"$(command -v pip)\" ]; then\n    python3 -m ensurepip ||\
           \ python3 -m ensurepip --user || apt-get install python3-pip\nfi\n\nPIP_DISABLE_PIP_VERSION_CHECK=1\
-          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.7.0'\
+          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.9.0'\
           \ '--no-deps' 'typing-extensions>=3.7.4,<5; python_version<\"3.9\"' && \"\
           $0\" \"$@\"\n"
         - sh
@@ -139,7 +137,7 @@ deploymentSpec:
         - -c
         - "\nif ! [ -x \"$(command -v pip)\" ]; then\n    python3 -m ensurepip ||\
           \ python3 -m ensurepip --user || apt-get install python3-pip\nfi\n\nPIP_DISABLE_PIP_VERSION_CHECK=1\
-          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.7.0'\
+          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.9.0'\
           \ '--no-deps' 'typing-extensions>=3.7.4,<5; python_version<\"3.9\"' && \"\
           $0\" \"$@\"\n"
         - sh
@@ -168,7 +166,7 @@ deploymentSpec:
         - -c
         - "\nif ! [ -x \"$(command -v pip)\" ]; then\n    python3 -m ensurepip ||\
           \ python3 -m ensurepip --user || apt-get install python3-pip\nfi\n\nPIP_DISABLE_PIP_VERSION_CHECK=1\
-          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.7.0'\
+          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.9.0'\
           \ '--no-deps' 'typing-extensions>=3.7.4,<5; python_version<\"3.9\"' && \"\
           $0\" \"$@\"\n"
         - sh
@@ -196,12 +194,6 @@ pipelineInfo:
   name: functions-with-outputs
 root:
   dag:
-    outputs:
-      artifacts:
-        output-named-tuple-metrics:
-          artifactSelectors:
-          - outputArtifactKey: metrics
-            producerSubtask: output-named-tuple
     tasks:
       add-numbers:
         cachingOptions:
@@ -274,11 +266,5 @@ root:
         parameterType: STRING
       second_number:
         parameterType: NUMBER_INTEGER
-  outputDefinitions:
-    artifacts:
-      output-named-tuple-metrics:
-        artifactType:
-          schemaTitle: system.Metrics
-          schemaVersion: 0.0.1
 schemaVersion: 2.1.0
-sdkVersion: kfp-2.7.0
+sdkVersion: kfp-2.9.0

sdk/python/test_data/pipelines/pipeline_with_metrics_outputs.yaml

@@ -1,17 +1,8 @@
 # PIPELINE DEFINITION
 # Name: pipeline-with-metrics-outputs
-# Outputs:
-#    output-metrics-2-metrics: system.Metrics
-#    output-metrics-metrics: system.Metrics
 components:
   comp-for-loop-2:
     dag:
-      outputs:
-        artifacts:
-          output-metrics-2-metrics:
-            artifactSelectors:
-            - outputArtifactKey: metrics
-              producerSubtask: output-metrics-2
       tasks:
         output-metrics-2:
           cachingOptions:
@@ -24,12 +15,6 @@ components:
       parameters:
         pipelinechannel--loop-item-param-1:
           parameterType: NUMBER_INTEGER
-    outputDefinitions:
-      artifacts:
-        output-metrics-2-metrics:
-          artifactType:
-            schemaTitle: system.Metrics
-            schemaVersion: 0.0.1
   comp-output-metrics:
     executorLabel: exec-output-metrics
     outputDefinitions:
@@ -60,7 +45,7 @@ deploymentSpec:
         - -c
         - "\nif ! [ -x \"$(command -v pip)\" ]; then\n    python3 -m ensurepip ||\
           \ python3 -m ensurepip --user || apt-get install python3-pip\nfi\n\nPIP_DISABLE_PIP_VERSION_CHECK=1\
-          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.7.0'\
+          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.9.0'\
           \ '--no-deps' 'typing-extensions>=3.7.4,<5; python_version<\"3.9\"' && \"\
           $0\" \"$@\"\n"
         - sh
@@ -91,7 +76,7 @@ deploymentSpec:
         - -c
         - "\nif ! [ -x \"$(command -v pip)\" ]; then\n    python3 -m ensurepip ||\
           \ python3 -m ensurepip --user || apt-get install python3-pip\nfi\n\nPIP_DISABLE_PIP_VERSION_CHECK=1\
-          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.7.0'\
+          \ python3 -m pip install --quiet --no-warn-script-location 'kfp==2.9.0'\
           \ '--no-deps' 'typing-extensions>=3.7.4,<5; python_version<\"3.9\"' && \"\
           $0\" \"$@\"\n"
         - sh
@@ -114,16 +99,6 @@ pipelineInfo:
   name: pipeline-with-metrics-outputs
 root:
   dag:
-    outputs:
-      artifacts:
-        output-metrics-2-metrics:
-          artifactSelectors:
-          - outputArtifactKey: output-metrics-2-metrics
-            producerSubtask: for-loop-2
-        output-metrics-metrics:
-          artifactSelectors:
-          - outputArtifactKey: metrics
-            producerSubtask: output-metrics
     tasks:
       for-loop-2:
         componentRef:
@@ -141,15 +116,5 @@ root:
           name: comp-output-metrics
         taskInfo:
           name: output-metrics
-  outputDefinitions:
-    artifacts:
-      output-metrics-2-metrics:
-        artifactType:
-          schemaTitle: system.Metrics
-          schemaVersion: 0.0.1
-      output-metrics-metrics:
-        artifactType:
-          schemaTitle: system.Metrics
-          schemaVersion: 0.0.1
 schemaVersion: 2.1.0
-sdkVersion: kfp-2.7.0
+sdkVersion: kfp-2.9.0