Statistics
https://play.clickhouse.com/play?user=play#c2VsZWN0IAp0b1N0YXJ0T2ZIb3VyKGNoZWNrX3N0YXJ0X3RpbWUpIGFzIGQsCmNvdW50KCksICBncm91cFVuaXFBcnJheShwdWxsX3JlcXVlc3RfbnVtYmVyKSwgIGFueShyZXBvcnRfdXJsKQpmcm9tIGNoZWNrcyB3aGVyZSAnMjAyMi0wNi0wMScgPD0gY2hlY2tfc3RhcnRfdGltZSBhbmQgdGVzdF9uYW1lIGxpa2UgJyUwMjQ5MV9wYXJ0X2xvZ19oYXNfdGFibGVfdXVpZCUnIGFuZCB0ZXN0X3N0YXR1cyBpbiAoJ0ZBSUwnLCAnRkxBS1knKSBncm91cCBieSBkIG9yZGVyIGJ5IGQgZGVzYw==

Some times there are not output from requests.
threads_queue.push(i);
        threads_queue.pop();
    }
    assert(threads_queue.empty());
    assert(std::all_of(threads_parts.begin(), threads_parts.end(), [](const std::vector<std::pair<String, DiskPtr>> & parts)
    {
        return !parts.empty();
    }));
    size_t suspicious_broken_parts = 0;
    size_t suspicious_broken_parts_bytes = 0;
    std::atomic<bool> has_adaptive_parts = false;
    std::atomic<bool> has_non_adaptive_parts = false;
    std::atomic<bool> has_lightweight_in_parts = false;
    std::mutex mutex;
    auto load_part = [&](const String & part_name, const DiskPtr & part_disk_ptr)
    {
        auto part_opt = MergeTreePartInfo::tryParsePartName(part_name, format_version);
        if (!part_opt)
            return;
        const auto & part_info = *part_opt;
        auto single_disk_volume = std::make_shared<SingleDiskVolume>("volume_" + part_name, part_disk_ptr, 0);
        auto data_part_storage = std::make_shared<DataPartStorageOnDisk>(single_disk_volume, relative_data_path, part_name);
        auto part = createPart(part_name, part_info, data_part_storage);
        bool broken = false;
        LOG_TRACE(log, "Loading part {} ({}) from disk {}", part_name, part->getType().toString(), part_disk_ptr->getName());
        String part_path = fs::path(relative_data_path) / part_name;
        String marker_path = fs::path(part_path) / IMergeTreeDataPart::DELETE_ON_DESTROY_MARKER_FILE_NAME;
        if (part_disk_ptr->exists(marker_path))
        {