https://clickhouse-test-reports.s3.yandex.net/8367/333ec2e496f4fe4addd22d5fa7c5c2a499099c57/fuzzer/fuzzer.log#fail1
{
    null_values.reserve(dict_struct.attributes.size());
    for (size_t i = 0; i < dict_struct.attributes.size(); ++i)
    {
        const auto & attribute = dict_struct.attributes[i];
        attribute_index_by_name.emplace(attribute.name, i);
        null_values.push_back(createAttributeNullValueWithType(attribute.underlying_type, attribute.null_value));
        if (attribute.hierarchical)
            throw Exception{name + ": hierarchical attributes not supported for dictionary of type " + getTypeName(),
                            ErrorCodes::TYPE_MISMATCH};
    }
}
void registerDictionarySSDComplexKeyCache(DictionaryFactory & factory)