Treemode Exception: 'host01' is not a valid root node

[luxiaoyong]

I encountered a problem when using clush in tree mode. When my hostname (host01.a.b) contains a dot and is used as the root node, clush throws an error:

clush: TREE MODE: "host01" is not a valid root node!

However, I found that when not using tree mode, the following command can be executed successfully. Is this a bug?

clush -w host01.a.b whoami