```
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] [                                                                                                                                                                                                                                        <=>               ]
```

for (const auto & dir_entry : std::filesystem::directory_iterator{absolute_path})
        {
            if (dir_entry.is_regular_file())
            {
                file_infos.file_names.push_back(dir_entry.path().filename());
            }
        }
    }
    else
    {
        throw Exception(ErrorCodes::BAD_ARGUMENTS, "The path {} neither a regular file, nor a directory", absolute_path.c_str());
    }
    
    for (const auto & file : file_infos.file_names)
    {
        auto inode = getInode(getFullDataPath(file));
        file_infos.context_by_name.emplace(file, FileContext{.inode = inode});
    }
    
    for (const auto & [file, ctx] : file_infos.context_by_name)
    {
        if (auto it = file_infos.meta_by_inode.find(ctx.inode); it != file_infos.meta_by_inode.end())
        {
            
            if (it->second.file_name != file)
            {
                std::filesystem::rename(getFullMetaPath(it->second.file_name), getFullMetaPath(file));
                it->second.file_name = file;
            }