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


The conditions that trigger an automatic scaling activity.



The definition of a CloudWatch metric alarm. When the defined alarm conditions are met along with other trigger parameters, scaling activity begins.

Type: CloudWatchAlarmDefinition object

Required: Yes

See Also

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

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