Amazon EMR now supports a variety of new Amazon EC2 Spot instance management features with instance fleets. Instead of specifying a specific Amazon EC2 instance type for an Amazon EMR instance group or Amazon EC2 availability zone for your Amazon EMR cluster, you can now provide a list of possible choices and allow Amazon EMR to automatically select an optimal combination. When creating clusters with instance fleets, Amazon EMR can now automatically provision Spot capacity across a variety of instance types, select optimal Amazon EC2 availability zones, and blend Spot and On-Demand capacity to minimize overall cost.
from What's New http://ift.tt/2nxFVEU
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