blueflood-core/src/main/java/com/rackspacecloud/blueflood/io/IOConfig.java
public Set<String> getUniqueHosts() {
        Set<String> uniqueHosts = new HashSet<String>();
        Collections.addAll(uniqueHosts, config.getStringProperty(CoreConfig.CASSANDRA_HOSTS).split(","));
        return uniqueHosts;
    }
public Set<String> getUniqueHosts() {
        Set<String> uniqueHosts = new HashSet<String>();
        Collections.addAll(uniqueHosts, config.getStringProperty(CoreConfig.CASSANDRA_HOSTS).split(","));
        return uniqueHosts;
    }
Retrieves the set of unique Cassandra hosts from configuration file.
If a single host appears multiple times in the configuration, only one will
be listed.

@return set of unique Cassandra hosts