Menu
Amazon Elastic MapReduce
API Reference (API Version 2009-03-31)

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.

Contents

Args

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

Type: Array of strings

Length Constraints: Minimum length of 0. Maximum length of 10280.

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

Required: No

Jar

A path to a JAR file run during the step.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 10280.

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

Required: Yes

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.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 10280.

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

Required: No

Properties

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.

Type: Array of KeyValue objects

Required: No

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following:

On this page: