public Boolean isUnhealthyNodeReplacement() {
        return this.unhealthyNodeReplacement;
    }
<p>
Indicates whether Amazon EMR should gracefully replace core nodes that have degraded within the cluster.
</p>

@return Indicates whether Amazon EMR should gracefully replace core nodes that have degraded within the cluster.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/JobFlowInstancesDetail.java