```sql
version 21.5.1

drop dictionary if exists curs_dict;
drop table if exists curs;

CREATE TABLE curs
(
    `a` UInt64,
    `b` UInt64,
    `e` UInt64,
    `rate` UInt16
)
ENGINE = MergeTree
ORDER BY a

insert into curs 
   select 1, 
   toYYYYMMDDhhmmss(toDateTime('2020-01-01 00:00:00')+number*2) , 
   toYYYYMMDDhhmmss(toDateTime('2020-01-01 00:00:00')+number*2+1), 1 
from numbers(1000000);

CREATE DICTIONARY curs_dict
(
    `a` Unt64,
    `b` UInt64,
    `e` UInt64,
    `rate` UInt16
)
PRIMARY KEY a
SOURCE(CLICKHOUSE(TABLE curs DB 'default' USER 'default'))
LIFETIME(MIN 0 MAX 10)
LAYOUT(RANGE_HASHED)
RANGE(MIN b MAX e);

0 rows in set. Elapsed: 115.715 sec.


SELECT sum(dictGetUInt16('curs_dict', 'rate', toUInt64(1), toYYYYMMDDhhmmss((toDateTime('2020-01-01 00:00:00') + (number * 2)) + 1))) AS s
FROM numbers(10000);

Elapsed: 0.023 sec.


SELECT sum(dictGetUInt16('curs_dict', 'rate', toUInt64(1), toYYYYMMDDhhmmss((toDateTime('2020-01-01 00:00:00') + (number * 2)) + 1))) AS s
FROM numbers(100000)

Elapsed: 2.264 sec.   / Expected  0.023*10 ~ 0.230

SELECT sum(dictGetUInt16('curs_dict', 'rate', toUInt64(1), toYYYYMMDDhhmmss((toDateTime('2020-01-01 00:00:00') + (rand())) + 1))) AS s
FROM numbers(100000)

Hangs forever
```
const Attribute & attribute,
    PaddedPODArray<KeyType> & keys,
    PaddedPODArray<RangeType> & start_dates,
    PaddedPODArray<RangeType> & end_dates) const
{
    const auto & collection = std::get<CollectionType<T>>(attribute.maps);
    keys.reserve(collection.size());
    start_dates.reserve(collection.size());
    end_dates.reserve(collection.size());
    const bool is_date = isDate(dict_struct.range_min->type);
    for (const auto & key : collection)
    {
        for (const auto & value : key.getMapped())
        {
            keys.push_back(key.getKey());
            start_dates.push_back(value.range.left);
            end_dates.push_back(value.range.right);
            if constexpr (std::numeric_limits<RangeType>::max() > DATE_LUT_MAX_DAY_NUM) 
                if (is_date && static_cast<UInt64>(end_dates.back()) > DATE_LUT_MAX_DAY_NUM)
                    end_dates.back() = 0;
        }
    }
}
template <DictionaryKeyType dictionary_key_type>
template <typename RangeType>
PaddedPODArray<Int64> RangeHashedDictionary<dictionary_key_type>::makeDateKeys(