public void setPriority(Double priority) {
        this.priority = priority;
    }
<p>
The priority at which Amazon EMR launches the Amazon EC2 instances with this instance type. Priority starts at 0,
which is the highest priority. Amazon EMR considers the highest priority first.
</p>

@param priority
       The priority at which Amazon EMR launches the Amazon EC2 instances with this instance type. Priority
       starts at 0, which is the highest priority. Amazon EMR considers the highest priority first.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/InstanceTypeSpecification.java