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

auto hive_files_in_partition = collectHiveFilesFromPartition(partition, query_info, hive_table_metadata, fs, context_);
                if (!hive_files_in_partition.empty())
                {
                    std::lock_guard<std::mutex> lock(hive_files_mutex);
                    hive_files.insert(std::end(hive_files), std::begin(hive_files_in_partition), std::end(hive_files_in_partition));
                }
            });
        }
        pool.wait();
    }
    else if (partition_name_types.empty()) 
    {
        auto file_infos = listDirectory(hive_table_metadata->getTable()->sd.location, hive_table_metadata, fs);
        for (const auto & file_info : file_infos)
        {
            pool.scheduleOrThrowOnError([&]
            {
                auto hive_file = createHiveFileIfNeeded(file_info, {}, query_info, context_);
                if (hive_file)
                {
                    std::lock_guard<std::mutex> lock(hive_files_mutex);
                    hive_files.push_back(hive_file);
                }
            });
        }
        pool.wait();
    }
    else 
        return {};
    auto sources_info = std::make_shared<StorageHiveSource::SourcesInfo>();