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.
{
        return storage_settings.get();
    }
    String getRelativeDataPath() const { return relative_data_path; }
    
    String getFullPathOnDisk(const DiskPtr & disk) const;
    
    
    DiskPtr tryGetDiskForDetachedPart(const String & part_name) const;
    DiskPtr getDiskForDetachedPart(const String & part_name) const;
    bool storesDataOnDisk() const override { return true; }
    Strings getDataPaths() const override;
    
    ReservationPtr reserveSpace(UInt64 expected_size) const;
    
    static ReservationPtr reserveSpace(UInt64 expected_size, SpacePtr space);
    static ReservationPtr tryReserveSpace(UInt64 expected_size, SpacePtr space);
    
    ReservationPtr reserveSpacePreferringTTLRules(
        const StorageMetadataPtr & metadata_snapshot,
        UInt64 expected_size,
        const IMergeTreeDataPart::TTLInfos & ttl_infos,
        time_t time_of_move,
        size_t min_volume_index = 0,