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.
{
    
    
    
    auto res = getZooKeeper();
    assertNotReadonly();
    return res;
}
static MergeTreePartInfo makeDummyDropRangeForMovePartitionOrAttachPartitionFrom(const String & partition_id)
{
    
    
    
    
    
    
    
    
    MergeTreePartInfo drop_range;
    drop_range.partition_id = partition_id;
    drop_range.min_block = 0;
    drop_range.max_block = 0;
    drop_range.level = 0;
    drop_range.mutation = 0;
    return drop_range;
}
StorageReplicatedMergeTree::StorageReplicatedMergeTree(