```
ubuntu@ip-172-31-79-147:/opt/downloads$ clickhouse-local --max_threads 8 --query "WITH parseDateTimeBestEffort(extract(_path, 'pageviews-([\\d\\-]+)\\.gz$')) AS time, splitByChar(' ', line) AS values, splitByChar('.', values[1]) AS projects SELECT time, projects[1] AS project, projects[2] AS subproject, values[2] AS path, (values[3])::UInt64 AS hits FROM file('pageviews*.gz', LineAsString) WHERE length(values) >= 3" | pv > /dev/null
^C01GiB 0:01:08 [ 129MiB/s] [                                                                                                                                                                   <=>                                                                                    ]

ubuntu@ip-172-31-79-147:/opt/downloads$ clickhouse-local --max_threads 8 --query "WITH parseDateTimeBestEffort(extract(toLowCardinality(_path), 'pageviews-([\\d\\-]+)\\.gz$')) AS time, splitByChar(' ', line) AS values, splitByChar('.', values[1]) AS projects SELECT time, projects[1] AS project, projects[2] AS subproject, values[2] AS path, (values[3])::UInt64 AS hits FROM file('pageviews*.gz', LineAsString) WHERE length(values) >= 3" | pv > /dev/null
^C46GiB 0:00:48 [ 175MiB/s] [                                                                                                                                                                                                                                        <=>               ]
```

{
    const std::string & disk_path = disk->getPath();
    const std::string key(disk_path + name);
    auto create_node_data = [&]()
    {
        ClusterNodeData data;
        data.connection_pool = StorageDistributedDirectoryMonitor::createPool(name, *this);
        data.directory_monitor = std::make_unique<StorageDistributedDirectoryMonitor>(
            *this, disk, relative_data_path + name,
            data.connection_pool,
            monitors_blocker,
            getContext()->getDistributedSchedulePool());
        return data;
    };
    
    if (startup)
    {
        auto tmp_node_data = create_node_data();
        std::lock_guard lock(cluster_nodes_mutex);
        auto & node_data = cluster_nodes_data[key];
        assert(!node_data.directory_monitor);
        node_data = std::move(tmp_node_data);
        return *node_data.directory_monitor;
    }
    else
    {
        std::lock_guard lock(cluster_nodes_mutex);
        auto & node_data = cluster_nodes_data[key];
        if (!node_data.directory_monitor)
        {