Call Amazon EMR Serverless with Step Functions

Step Functions can control certain Amazon services directly from Amazon States Language (ASL). To learn more, see Working with other services and Pass parameters to a service API.

EMR Serverless service integration APIs

To integrate Amazon Step Functions with EMR Serverless, you can use the following six EMR Serverless service integration APIs. These service integration APIs are similar to the corresponding EMR Serverless APIs, with some differences in the fields that are passed and in the responses that are returned.

The following table describes the differences between each service integration API and its corresponding EMR Serverless API.

{
  "ApplicationId": "string"
}

{
  "ApplicationId": "string"
}

{
  "ApplicationId": "string"
}

{
  "ApplicationId": "string"
}

{
  "ApplicationId": "string"
}

{
  "ApplicationId": "string"
}

EMR Serverless integration use cases

For the Optimized EMR Serverless service integration, we recommend that you create a single application, and then use that application to run multiple jobs. For example, in a single state machine, you can include multiple startJobRun requests, all of which use the same application. The following Task state state examples show use cases to integrate EMR Serverless APIs with Step Functions. For information about other use cases of EMR Serverless, see What is Amazon EMR Serverless.

For information about how to configure IAM permissions when using Step Functions with other Amazon services, see IAM Policies for integrated services.

In the examples shown in the following use cases, replace the italicized text with your resource-specific information. For example, replace yourApplicationId with the ID of your EMR Serverless application, such as 00yv7iv71inak893.

Create an application

The following Task state example creates an application using the createApplication.sync service integration API.

"Create_Application": {
    "Type": "Task",
    "Resource": "arn:aws-cn:states:::emr-serverless:createApplication.sync",
    "Parameters": {
        "Name": "MyApplication",
        "ReleaseLabel": "emr-6.9.0",
        "Type": "SPARK"
    },
    "End": true
}

Start an application

The following Task state example starts an application using the startApplication.sync service integration API.

"Start_Application": {
    "Type": "Task",
    "Resource": "arn:aws-cn:states:::emr-serverless:startApplication.sync",
    "Parameters": {
        "ApplicationId": "yourApplicationId"
    },
    "End": true
}

Stop an application

The following Task state example stops an application using the stopApplication.sync service integration API.

"Stop_Application": {
    "Type": "Task",
    "Resource": "arn:aws-cn:states:::emr-serverless:stopApplication.sync",
    "Parameters": {
        "ApplicationId": "yourApplicationId"
    },
    "End": true
}

Delete an application

The following Task state example deletes an application using the deleteApplication.sync service integration API.

"Delete_Application": {
    "Type": "Task",
    "Resource": "arn:aws-cn:states:::emr-serverless:deleteApplication.sync",
    "Parameters": {
        "ApplicationId": "yourApplicationId"
    },
    "End": true
}

Start a job in an application

The following Task state example starts a job in an application using the startJobRun.sync service integration API.

"Start_Job": {
    "Type": "Task",
    "Resource": "arn:aws-cn:states:::emr-serverless:startJobRun.sync",
    "Parameters": {
        "ApplicationId": "yourApplicationId",
        "ExecutionRoleArn": "arn:aws-cn:iam::123456789012:role/myEMRServerless-execution-role",
        "JobDriver": {
            "SparkSubmit": {
                "EntryPoint": "s3://<mybucket>/sample.py",
                "EntryPointArguments": ["1"],
                "SparkSubmitParameters": "--conf spark.executor.cores=4 --conf spark.executor.memory=4g --conf spark.driver.cores=2 --conf spark.driver.memory=4g --conf spark.executor.instances=1"
            }
        }
    },
    "End": true
}

Cancel a job in an application

The following Task state example cancels a job in an application using the cancelJobRun.sync service integration API.

"Cancel_Job": {
    "Type": "Task",
    "Resource": "arn:aws-cn:states:::emr-serverless:cancelJobRun.sync",
    "Parameters": {
        "ApplicationId.$": "$.ApplicationId",
        "JobRunId.$": "$.JobRunId"
    },
    "End": true
}