```
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{root_meta_path})
    {
        if (!dir_entry.is_regular_file())
        {
            throw Exception(
                ErrorCodes::BAD_FILE_TYPE,
                "The file {} under {} is not a regular file when deserializing meta files",
                dir_entry.path().c_str(),
                root_meta_path);
        }
        ReadBufferFromFile in(dir_entry.path().c_str());
        FileMeta meta;
        UInt64 inode, last_written_pos;
        if (!tryReadIntText(inode, in))
        {
            throw Exception(ErrorCodes::CANNOT_READ_ALL_DATA, "Read meta file {} failed", dir_entry.path().c_str());
        }
        assertChar('\n', in);
        if (!tryReadIntText(last_written_pos, in))
        {
            throw Exception(ErrorCodes::CANNOT_READ_ALL_DATA, "Read meta file {} failed", dir_entry.path().c_str());
        }
        meta.file_name = dir_entry.path().filename();
        meta.last_writen_position = last_written_pos;
        file_infos.meta_by_inode.emplace(inode, meta);
    }
}
UInt64 StorageFileLog::getInode(const String & file_name)