AWS CloudFormation
User Guide (Version )

AWS::EMR::Step HadoopJarStepConfig

A job flow step consisting of a JAR file whose main function will be executed. The main function submits a job for Hadoop to execute and waits for the job to finish or fail.

Syntax

To declare this entity in your AWS CloudFormation template, use the following syntax:

JSON

{ "Args" : [ String, ... ], "Jar" : String, "MainClass" : String, "StepProperties" : [ KeyValue, ... ] }

YAML

Args: - String Jar: String MainClass: String StepProperties: - KeyValue

Properties

Args

A list of command line arguments passed to the JAR file's main function when executed.

Required: No

Type: List of String

Update requires: Replacement

Jar

A path to a JAR file run during the step.

Required: Yes

Type: String

Minimum: 0

Maximum: 10280

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Update requires: Replacement

MainClass

The name of the main class in the specified Java file. If not specified, the JAR file should specify a Main-Class in its manifest file.

Required: No

Type: String

Minimum: 0

Maximum: 10280

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Update requires: Replacement

StepProperties

A list of Java properties that are set when the step runs. You can use these properties to pass key value pairs to your main function.

Required: No

Type: List of KeyValue

Update requires: Replacement

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