new ImmutableTable.Builder<Granularity, RollupType, TimeValue>();
for (Granularity granularity : Granularity.granularities()) {
for (RollupType type : RollupType.values()) {
try {
ColumnFamily cf = CassandraModel.getColumnFamily(RollupType.classOf(type, granularity), granularity);
if (cf instanceof CassandraModel.MetricColumnFamily) {
CassandraModel.MetricColumnFamily metricCF = (CassandraModel.MetricColumnFamily) cf;
TimeValue ttl = new TimeValue(metricCF.getDefaultTTL().getValue() * 5, metricCF.getDefaultTTL().getUnit());
ttlMapBuilder.put(granularity, type, ttl);