We use clickhosue version 21.12.2.17 before.It works well

But we found that after upgrade to 22.3.3, the memory of clickhouse used grow up daily .

I don't know if this is a memory overflow

here is the promethues metric 'ClickHouseMetrics_MemoryTracking'  duration last 15days

![image](https://user-images.githubusercontent.com/8294900/163744096-80270f73-becd-47ce-91b7-c6a96f13c1b6.png)

and I restarted cknode1 at 4.14 ,you can see it come down and rising again.

And here is some sql and result I have run for diagnosis。

![image](https://user-images.githubusercontent.com/8294900/163744418-251c86d8-832c-4aff-aa1a-6e565d47d196.png)

![image](https://user-images.githubusercontent.com/8294900/163744455-73813554-784a-4df6-803e-5ef49dbf1776.png)

![image](https://user-images.githubusercontent.com/8294900/163744529-50c4e359-feb7-4499-9449-0efc1c75942f.png)

![image](https://user-images.githubusercontent.com/8294900/163744587-c51e3ba3-6925-4591-b15d-bb0e0262af8c.png)

we use dict and MaterializedView . no living view.

we have tried  'system drop mark cache '  and change 'max_bytes_before_external_group_by' to '6g'.Not work

Is there anyting else  I can do?





{
    if (schedule)
    {
        std::unique_lock lock(bg_tasks_mutex);
        bg_tasks_condvar.wait(lock, [this]() { return num_added_bg_tasks == num_finished_bg_tasks; });
        while (!upload_object_tasks.empty())
        {
            auto & task = upload_object_tasks.front();
            if (task.exception)
                std::rethrow_exception(task.exception);
            part_tags.push_back(task.tag);
            upload_object_tasks.pop_front();
        }
        if (put_object_task)
        {
            bg_tasks_condvar.wait(lock, [this]() { return put_object_task->is_finised; });
            if (put_object_task->exception)
                std::rethrow_exception(put_object_task->exception);
        }
    }
}
}
#endif