feature: support cluster lifecycle management for Sagemaker EMR step

doc/workflows/pipelines/sagemaker.workflow.pipelines.rst

@@ -169,4 +169,8 @@ Steps
 
 .. autoclass:: sagemaker.workflow.fail_step.FailStep
 
+.. autoclass:: sagemaker.workflow.emr_step.EMRStepConfig
+
+.. autoclass:: sagemaker.workflow.emr_step.EMRStep
+
 .. autoclass:: sagemaker.workflow.automl_step.AutoMLStep

src/sagemaker/workflow/emr_step.py

@@ -13,7 +13,7 @@
 """The step definitions for workflow."""
 from __future__ import absolute_import
 
-from typing import List, Union, Optional
+from typing import Any, Dict, List, Union, Optional
 
 from sagemaker.workflow.entities import (
     RequestType,
@@ -33,7 +33,8 @@ def __init__(
     ):
         """Create a definition for input data used by an EMR cluster(job flow) step.
 
-        See AWS documentation on the ``StepConfig`` API for more details on the parameters.
+        See AWS documentation for more information about the `StepConfig
+        <https://docs.aws.amazon.com/emr/latest/APIReference/API_StepConfig.html>`_ API parameters.
 
         Args:
             args(List[str]):
@@ -61,9 +62,89 @@ def to_request(self) -> RequestType:
         return config
 
 
+INSTANCES = "Instances"
+INSTANCEGROUPS = "InstanceGroups"
+INSTANCEFLEETS = "InstanceFleets"
+ERR_STR_WITH_NAME_AUTO_TERMINATION_OR_STEPS = (
+    "In EMRStep {step_name}, cluster_config "
+    "should not contain any of the Name, "
+    "AutoTerminationPolicy and/or Steps."
+)
+
+ERR_STR_WITHOUT_INSTANCE = "In EMRStep {step_name}, cluster_config must contain " + INSTANCES + "."
+
+ERR_STR_WITH_KEEPJOBFLOW_OR_TERMINATIONPROTECTED = (
+    "In EMRStep {step_name}, " + INSTANCES + " should not contain "
+    "KeepJobFlowAliveWhenNoSteps or "
+    "TerminationProtected."
+)
+
+ERR_STR_BOTH_OR_NONE_INSTANCEGROUPS_OR_INSTANCEFLEETS = (
+    "In EMRStep {step_name}, "
+    + INSTANCES
+    + " should contain either "
+    + INSTANCEGROUPS
+    + " or "
+    + INSTANCEFLEETS
+    + "."
+)
+
+ERR_STR_WITH_BOTH_CLUSTER_ID_AND_CLUSTER_CFG = (
+    "EMRStep {step_name} can not have both cluster_id"
+    "or cluster_config."
+    "To use EMRStep with "
+    "cluster_config, cluster_id "
+    "must be explicitly set to None."
+)
+
+ERR_STR_WITHOUT_CLUSTER_ID_AND_CLUSTER_CFG = (
+    "EMRStep {step_name} must have either cluster_id or cluster_config"
+)
+
+
 class EMRStep(Step):
     """EMR step for workflow."""
 
+    def _validate_cluster_config(self, cluster_config, step_name):
+        """Validates user provided cluster_config.
+
+        Args:
+            cluster_config(Union[Dict[str, Any], List[Dict[str, Any]]]):
+                user provided cluster configuration.
+            step_name: The name of the EMR step.
+        """
+
+        if (
+            "Name" in cluster_config
+            or "AutoTerminationPolicy" in cluster_config
+            or "Steps" in cluster_config
+        ):
+            raise ValueError(
+                ERR_STR_WITH_NAME_AUTO_TERMINATION_OR_STEPS.format(step_name=step_name)
+            )
+
+        if INSTANCES not in cluster_config:
+            raise ValueError(ERR_STR_WITHOUT_INSTANCE.format(step_name=step_name))
+
+        if (
+            "KeepJobFlowAliveWhenNoSteps" in cluster_config[INSTANCES]
+            or "TerminationProtected" in cluster_config[INSTANCES]
+        ):
+            raise ValueError(
+                ERR_STR_WITH_KEEPJOBFLOW_OR_TERMINATIONPROTECTED.format(step_name=step_name)
+            )
+
+        if (
+            INSTANCEGROUPS in cluster_config[INSTANCES]
+            and INSTANCEFLEETS in cluster_config[INSTANCES]
+        ) or (
+            INSTANCEGROUPS not in cluster_config[INSTANCES]
+            and INSTANCEFLEETS not in cluster_config[INSTANCES]
+        ):
+            raise ValueError(
+                ERR_STR_BOTH_OR_NONE_INSTANCEGROUPS_OR_INSTANCEFLEETS.format(step_name=step_name)
+            )
+
     def __init__(
         self,
         name: str,
@@ -73,8 +154,9 @@ def __init__(
         step_config: EMRStepConfig,
         depends_on: Optional[List[Union[str, Step, StepCollection]]] = None,
         cache_config: CacheConfig = None,
+        cluster_config: Dict[str, Any] = None,
     ):
-        """Constructs a EMRStep.
+        """Constructs an `EMRStep`.
 
         Args:
             name(str): The name of the EMR step.
@@ -86,16 +168,46 @@ def __init__(
                 names or `Step` instances or `StepCollection` instances that this `EMRStep`
                 depends on.
             cache_config(CacheConfig):  A `sagemaker.workflow.steps.CacheConfig` instance.
+            cluster_config(Dict[str, Any]): The recipe of the
+                EMR cluster, passed as a dictionary.
+                The elements are defined in the request syntax for `RunJobFlow`.
+                However, the following elements are not recognized as part of the cluster
+                configuration and you should not include them in the dictionary:
+
+                * ``cluster_config[Name]``
+                * ``cluster_config[Steps]``
+                * ``cluster_config[AutoTerminationPolicy]``
+                * ``cluster_config[Instances][KeepJobFlowAliveWhenNoSteps]``
+                * ``cluster_config[Instances][TerminationProtected]``
+
+                For more information about the fields you can include in your cluster
+                configuration, see
+                https://docs.aws.amazon.com/emr/latest/APIReference/API_RunJobFlow.html.
+                Note that if you want to use ``cluster_config``, then you have to set
+                ``cluster_id`` as None.
 
         """
         super(EMRStep, self).__init__(name, display_name, description, StepTypeEnum.EMR, depends_on)
 
-        emr_step_args = {"ClusterId": cluster_id, "StepConfig": step_config.to_request()}
+        emr_step_args = {"StepConfig": step_config.to_request()}
+        root_property = Properties(step_name=name, shape_name="Step", service_name="emr")
+
+        if cluster_id is None and cluster_config is None:
+            raise ValueError(ERR_STR_WITHOUT_CLUSTER_ID_AND_CLUSTER_CFG.format(step_name=name))
+
+        if cluster_id is not None and cluster_config is not None:
+            raise ValueError(ERR_STR_WITH_BOTH_CLUSTER_ID_AND_CLUSTER_CFG.format(step_name=name))
+
+        if cluster_id is not None:
+            emr_step_args["ClusterId"] = cluster_id
+            root_property.__dict__["ClusterId"] = cluster_id
+        elif cluster_config is not None:
+            self._validate_cluster_config(cluster_config, name)
+            emr_step_args["ClusterConfig"] = cluster_config
+            root_property.__dict__["ClusterConfig"] = cluster_config
+
         self.args = emr_step_args
         self.cache_config = cache_config
-
-        root_property = Properties(step_name=name, shape_name="Step", service_name="emr")
-        root_property.__dict__["ClusterId"] = cluster_id
         self._properties = root_property
 
     @property

tests/integ/sagemaker/workflow/test_emr_steps.py

@@ -80,3 +80,57 @@ def test_two_steps_emr_pipeline(sagemaker_session, role, pipeline_name, region_n
             pipeline.delete()
         except Exception:
             pass
+
+
+def test_emr_with_cluster_config(sagemaker_session, role, pipeline_name, region_name):
+
+    emr_step_config = EMRStepConfig(
+        jar="s3://us-west-2.elasticmapreduce/libs/script-runner/script-runner.jar",
+        args=["dummy_emr_script_path"],
+    )
+
+    cluster_config = {
+        "Instances": {
+            "InstanceGroups": [
+                {
+                    "Name": "Master Instance Group",
+                    "InstanceRole": "MASTER",
+                    "InstanceCount": 1,
+                    "InstanceType": "m1.small",
+                    "Market": "ON_DEMAND",
+                }
+            ],
+            "InstanceCount": 1,
+            "HadoopVersion": "MyHadoopVersion",
+        },
+        "AmiVersion": "3.8.0",
+        "AdditionalInfo": "MyAdditionalInfo",
+    }
+
+    step_emr_with_cluster_config = EMRStep(
+        name="MyEMRStep-name",
+        display_name="MyEMRStep-display_name",
+        description="MyEMRStepDescription",
+        cluster_id=None,
+        step_config=emr_step_config,
+        cluster_config=cluster_config,
+    )
+
+    pipeline = Pipeline(
+        name=pipeline_name,
+        steps=[step_emr_with_cluster_config],
+        sagemaker_session=sagemaker_session,
+    )
+
+    try:
+        response = pipeline.create(role)
+        create_arn = response["PipelineArn"]
+        assert re.match(
+            rf"arn:aws:sagemaker:{region_name}:\d{{12}}:pipeline/{pipeline_name}",
+            create_arn,
+        )
+    finally:
+        try:
+            pipeline.delete()
+        except Exception:
+            pass