Preprocessed traces: https://pastila.nl/?0006a09d/f3f1725be8a2ec8787b2d5c8b1eb6532
Report: https://s3.amazonaws.com/clickhouse-test-reports/40506/f2be18b3a644debbb882b8a9e8396b0375461b36/stress_test__undefined_.html
protected:
    explicit OvercommitTracker(std::mutex & global_mutex_);
    virtual void pickQueryToExcludeImpl() = 0;
    
    
    std::mutex overcommit_m;
    std::condition_variable cv;
    
    
    
    
    MemoryTracker * picked_tracker;
private:
    void pickQueryToExclude()
    {
        if (cancellation_state == QueryCancellationState::NONE)
        {
            pickQueryToExcludeImpl();
            cancellation_state = QueryCancellationState::SELECTED;
        }
    }
    void reset() noexcept