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.
if (!getStorageID().hasUUID())
        getContext()->dropCaches();
    LOG_TRACE(log, "dropAllData: removing data from filesystem.");
    
    clearPartsFromFilesystem(all_parts);
    for (const auto & disk : getDisks())
    {
        if (disk->isBroken())
            continue;
        try
        {
            disk->removeRecursive(relative_data_path);
        }
        catch (const fs::filesystem_error & e)
        {
            if (e.code() == std::errc::no_such_file_or_directory)
            {
                
                tryLogCurrentException(__PRETTY_FUNCTION__);
            }
            else
                throw;
        }
    }
    setDataVolume(0, 0, 0);
    LOG_TRACE(log, "dropAllData: done.");
}
void MergeTreeData::dropIfEmpty()