https://clickhouse-test-reports.s3.yandex.net/18817/9049599e367bcccd809f45af138452f965b3303a/stress_test_(undefined)/test_run.txt.out.log
{
        std::unique_lock lock(mutex);
        scheduleCloseSession(session, lock);
    }
private:
    class SessionKeyHash
    {
    public:
        size_t operator()(const Key & key) const