For some reasons when we delete a MergeTree Part in atomic way something may go wrong - and leave the `delete_tmp_*` folder or it's part on disk. This may lead to a disk space consumption over time.

It's suggested to delete this folders at least at server start-up. Current solution with `clearOldTemporaryDirectories()` doesn't work because this method is called periodically from a thread without any locks or advisory on folders - it may cause the race conditions.
DataPartsVector commit(MergeTreeData::DataPartsLock * acquired_parts_lock = nullptr);
        void rollback();
        
        
        void rollbackPartsToTemporaryState();
        size_t size() const { return precommitted_parts.size(); }
        bool isEmpty() const { return precommitted_parts.empty(); }
        ~Transaction()
        {
            try
            {
                rollback();
            }
            catch (...)
            {
                tryLogCurrentException("~MergeTreeData::Transaction");
            }
        }
    private:
        friend class MergeTreeData;
        MergeTreeData & data;
        MergeTreeTransaction * txn;
        DataParts precommitted_parts;
        void clear() { precommitted_parts.clear(); }
    };
    using TransactionUniquePtr = std::unique_ptr<Transaction>;
    using PathWithDisk = std::pair<String, DiskPtr>;
    struct PartsTemporaryRename : private boost::noncopyable
    {
        PartsTemporaryRename(