AWS SDK Version 2 for .NET
API Reference

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.NET Framework 4.5
 
Container for the parameters to the RunJobFlow operation. RunJobFlow creates and starts running a new job flow. The job flow will run the steps specified. Once the job flow completes, the cluster is stopped and the HDFS partition is lost. To prevent loss of data, configure the last step of the job flow to store results in Amazon S3. If the JobFlowInstancesConfigKeepJobFlowAliveWhenNoSteps parameter is set to TRUE, the job flow will transition to the WAITING state rather than shutting down once the steps have completed.

For additional protection, you can set the JobFlowInstancesConfigTerminationProtected parameter to TRUE to lock the job flow and prevent it from being terminated by API call, user intervention, or in the event of a job flow error.

A maximum of 256 steps are allowed in each job flow.

If your job flow is long-running (such as a Hive data warehouse) or complex, you may require more than 256 steps to process your data. You can bypass the 256-step limitation in various ways, including using the SSH shell to connect to the master node and submitting queries directly to the software running on the master node, such as Hive and Hadoop. For more information on how to do this, go to Add More than 256 Steps to a Job Flow in the Amazon Elastic MapReduce Developer's Guide.

For long running job flows, we recommend that you periodically store your results.

Inheritance Hierarchy

System.Object
  Amazon.Runtime.AmazonWebServiceRequest
    Amazon.ElasticMapReduce.AmazonElasticMapReduceRequest
      Amazon.ElasticMapReduce.Model.RunJobFlowRequest

Namespace: Amazon.ElasticMapReduce.Model
Assembly: AWSSDK.dll
Version: (assembly version)

Syntax

C#
public class RunJobFlowRequest : AmazonElasticMapReduceRequest
         IRequestEvents

The RunJobFlowRequest type exposes the following members

Constructors

NameDescription
Public Method RunJobFlowRequest() Empty constructor used to set properties independently even when a simple constructor is available
Public Method RunJobFlowRequest(string, JobFlowInstancesConfig) Instantiates RunJobFlowRequest with the parameterized properties

Properties

NameTypeDescription
Public Property AdditionalInfo System.String Gets and sets the property AdditionalInfo.

A JSON string for selecting additional features.

Public Property AmiVersion System.String Gets and sets the property AmiVersion.

For Amazon EMR releases 3.x and 2.x. For Amazon EMR releases 4.x and greater, use ReleaseLabel.

The version of the Amazon Machine Image (AMI) to use when launching Amazon EC2 instances in the job flow. The following values are valid:

  • The version number of the AMI to use, for example, "2.0."

If the AMI supports multiple versions of Hadoop (for example, AMI 1.0 supports both Hadoop 0.18 and 0.20) you can use the JobFlowInstancesConfigHadoopVersion parameter to modify the version of Hadoop from the defaults shown above.

For details about the AMI versions currently supported by Amazon Elastic MapReduce, go to AMI Versions Supported in Elastic MapReduce in the Amazon Elastic MapReduce Developer's Guide.

Public Property Applications System.Collections.Generic.List<Amazon.ElasticMapReduce.Model.Application> Gets and sets the property Applications.

Amazon EMR releases 4.x or later.

A list of applications for the cluster. Valid values are: "Hadoop", "Hive", "Mahout", "Pig", and "Spark." They are case insensitive.

Public Property BootstrapActions System.Collections.Generic.List<Amazon.ElasticMapReduce.Model.BootstrapActionConfig> Gets and sets the property BootstrapActions.

A list of bootstrap actions that will be run before Hadoop is started on the cluster nodes.

Public Property Configurations System.Collections.Generic.List<Amazon.ElasticMapReduce.Model.Configuration> Gets and sets the property Configurations.

Amazon EMR releases 4.x or later.

The list of configurations supplied for the EMR cluster you are creating.

Public Property Instances Amazon.ElasticMapReduce.Model.JobFlowInstancesConfig Gets and sets the property Instances.

A specification of the number and type of Amazon EC2 instances on which to run the job flow.

Public Property JobFlowRole System.String Gets and sets the property JobFlowRole.

Also called instance profile and EC2 role. An IAM role for an EMR cluster. The EC2 instances of the cluster assume this role. The default role is EMR_EC2_DefaultRole. In order to use the default role, you must have already created it using the CLI or console.

Public Property LogUri System.String Gets and sets the property LogUri.

The location in Amazon S3 to write the log files of the job flow. If a value is not provided, logs are not created.

Public Property Name System.String Gets and sets the property Name.

The name of the job flow.

Public Property NewSupportedProducts System.Collections.Generic.List<Amazon.ElasticMapReduce.Model.SupportedProductConfig> Gets and sets the property NewSupportedProducts.

For Amazon EMR releases 3.x and 2.x. For Amazon EMR releases 4.x and greater, use Applications.

A list of strings that indicates third-party software to use with the job flow that accepts a user argument list. EMR accepts and forwards the argument list to the corresponding installation script as bootstrap action arguments. For more information, see Launch a Job Flow on the MapR Distribution for Hadoop. Currently supported values are:

  • "mapr-m3" - launch the cluster using MapR M3 Edition.
  • "mapr-m5" - launch the cluster using MapR M5 Edition.
  • "mapr" with the user arguments specifying "--edition,m3" or "--edition,m5" - launch the job flow using MapR M3 or M5 Edition respectively.
  • "mapr-m7" - launch the cluster using MapR M7 Edition.
  • "hunk" - launch the cluster with the Hunk Big Data Analtics Platform.
  • "hue"- launch the cluster with Hue installed.
  • "spark" - launch the cluster with Apache Spark installed.
  • "ganglia" - launch the cluster with the Ganglia Monitoring System installed.
Public Property ReleaseLabel System.String Gets and sets the property ReleaseLabel.

Amazon EMR releases 4.x or later.

The release label for the Amazon EMR release. For Amazon EMR 3.x and 2.x AMIs, use amiVersion instead instead of ReleaseLabel.

Public Property ServiceRole System.String Gets and sets the property ServiceRole.

The IAM role that will be assumed by the Amazon EMR service to access AWS resources on your behalf.

Public Property Steps System.Collections.Generic.List<Amazon.ElasticMapReduce.Model.StepConfig> Gets and sets the property Steps.

A list of steps to be executed by the job flow.

Public Property SupportedProducts System.Collections.Generic.List<System.String> Gets and sets the property SupportedProducts.

For Amazon EMR releases 3.x and 2.x. For Amazon EMR releases 4.x and greater, use Applications.

A list of strings that indicates third-party software to use with the job flow. For more information, go to Use Third Party Applications with Amazon EMR. Currently supported values are:

  • "mapr-m3" - launch the job flow using MapR M3 Edition.
  • "mapr-m5" - launch the job flow using MapR M5 Edition.
Public Property Tags System.Collections.Generic.List<Amazon.ElasticMapReduce.Model.Tag> Gets and sets the property Tags.

A list of tags to associate with a cluster and propagate to Amazon EC2 instances.

Public Property VisibleToAllUsers System.Boolean Gets and sets the property VisibleToAllUsers.

Whether the job flow is visible to all IAM users of the AWS account associated with the job flow. If this value is set to true, all IAM users of that AWS account can view and (if they have the proper policy permissions set) manage the job flow. If it is set to false, only the IAM user that created the job flow can view and manage it.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

.NET for Windows Store apps:
Supported in: Windows 8