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

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Modify the size or configurations of an instance group.



A list of new or modified configurations to apply for an instance group.

Type: Array of Configuration objects

Required: No


The EC2 InstanceIds to terminate. After you terminate the instances, the instance group will not return to its original requested size.

Type: Array of strings

Required: No


Target size for the instance group.

Type: Integer

Required: No


Unique ID of the instance group to expand or shrink.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 256.

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

Required: Yes


Policy for customizing shrink operations.

Type: ShrinkPolicy object

Required: No

See Also

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

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