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.
const DataPartPtr & part,
    std::unique_lock<std::mutex> & ) const
{
    auto it = updated_version_by_block_range.find(std::make_pair(part->info.min_block, part->info.max_block));
    if (it != updated_version_by_block_range.end())
        return std::max(part->info.getDataVersion(), static_cast<Int64>(it->second));
    else
        return part->info.getDataVersion();
}
UInt64 StorageMergeTree::getCurrentMutationVersion(