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
```
{
        destroyElements();
        this->clearHasZero();
        m_size = 0;
        free();
    }
    size_t getBufferSizeInBytes() const
    {
        return grower.bufSize() * sizeof(Cell);
    }
    size_t getBufferSizeInCells() const
    {
        return grower.bufSize();
    }
#ifdef DBMS_HASH_MAP_COUNT_COLLISIONS
    size_t getCollisions() const
    {
        return collisions;
    }
#endif
};