This is a significant upgrade of Elastic MapReduce to support expanding and shrinking the number of nodes on a running cluster.
|Resize running job flow||Elastic MapReduce now supports
adding and removing the number of cluster nodes for a running job flow.
Existing job flows and command line scripts making calls to service APIs are
backwards compatible with these architectural changes.
Note: You need to update the Elastic MapReduce Command Line Interface to resize running job flows and modify instance groups.
|Guide Revision||This release features a reorganization of the Elastic MapReduce Developer Guide.|
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