public void setRunningAmiVersion(String runningAmiVersion) {
        this.runningAmiVersion = runningAmiVersion;
    }
<p>
The AMI version running on this cluster.
</p>

@param runningAmiVersion
       The AMI version running on this cluster.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/Cluster.java