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

{
    SettingsChanges result;
    
    if (!kafka_settings->input_format_skip_unknown_fields.changed)
    {
        
        kafka_settings->input_format_skip_unknown_fields = true;
    }
    if (!kafka_settings->input_format_allow_errors_ratio.changed)
    {
        kafka_settings->input_format_allow_errors_ratio = 0.;
    }
    if (!kafka_settings->input_format_allow_errors_num.changed)
    {
        kafka_settings->input_format_allow_errors_num = kafka_settings->kafka_skip_broken_messages.value;
    }
    if (!schema_name.empty())
        result.emplace_back("format_schema", schema_name);
    for (const auto & setting : *kafka_settings)
    {
        const auto & name = setting.getName();
        if (name.find("kafka_") == std::string::npos)
            result.emplace_back(name, setting.getValue());
    }
    return result;
}
Names StorageKafka::parseTopics(String topic_list)