This query does not show realtime metrics:

```
INSERT INTO wikistat 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,
    CAST(values[3], 'UInt64') AS hits
FROM s3('https://....s3.eu-central-1.amazonaws.com/wikistat/original/*.gz', '...', '...', LineAsString, auto)
WHERE length(values) >= 3
```

Although this query does:

```
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,
    CAST(values[3], 'UInt64') AS hits
FROM s3('https://....s3.eu-central-1.amazonaws.com/wikistat/original/*.gz', '...', '...', LineAsString, auto)
WHERE length(values) >= 3
```

I also was not able to cancel the first query.
buffer.reserve(result_batch.size());
        for (const auto & row : result_batch)
        {
            String key = row.GetKey();
            if (re2::RE2::FullMatch(key, *matcher))
                buffer.emplace_back(std::move(key));
        }
        
        buffer_iter = buffer.begin();
        request.SetContinuationToken(outcome.GetResult().GetNextContinuationToken());
        
        is_finished = !outcome.GetResult().GetIsTruncated();
    }
    std::mutex mutex;
    Strings buffer;
    Strings::iterator buffer_iter;
    Aws::S3::S3Client client;
    S3::URI globbed_uri;
    Aws::S3::Model::ListObjectsV2Request request;
    Aws::S3::Model::ListObjectsV2Outcome outcome;
    std::unique_ptr<re2::RE2> matcher;
    bool is_finished{false};
};
StorageS3Source::DisclosedGlobIterator::DisclosedGlobIterator(Aws::S3::S3Client & client_, const S3::URI & globbed_uri_)
    : pimpl(std::make_shared<StorageS3Source::DisclosedGlobIterator::Impl>(client_, globbed_uri_)) {}
String StorageS3Source::DisclosedGlobIterator::next()
{
    return pimpl->next();
}
class StorageS3Source::KeysIterator::Impl