https://clickhouse-test-reports.s3.yandex.net/17375/99073c26ee2692f8efe2ab14b2d8ae0fd813b80e/fuzzer/fuzzer.log

```
SELECT
    k,
    topK(v)
FROM 
(
    SELECT
        number % 7 AS k,
        arrayMap(x -> arrayMap(x -> if(x = 0, NULL, toString(x)), range(x)), range(intDiv(number, 1))) AS v
    FROM system.numbers
    LIMIT 257
)
GROUP BY k
ORDER BY k ASC
```
return;
        }
        auto min = counter_list.back();
        
        
        
        
        if (increment > min->count)
        {
            destroyLastElement();
            push(new Counter(arena.emplace(key), increment, error, hash));
            return;
        }
        const size_t alpha_mask = alpha_map.size() - 1;
        auto & alpha = alpha_map[hash & alpha_mask];
        if (alpha + increment < min->count)
        {
            alpha += increment;
            return;
        }
        
        alpha_map[min->hash & alpha_mask] = min->count;
        destroyLastElement();
        push(new Counter(arena.emplace(key), alpha + increment, alpha + error, hash));
    }
    /*
     * Parallel Space Saving reduction and combine step from:
     *  https://arxiv.org/pdf/1401.0702.pdf
     */
    void merge(const Self & rhs)