Re: Ext2 directory index: ALS paper and benchmarks

[Hans Reiser <reiser@namesys.com>]

Daniel Phillips wrote:

>On December 6, 2001 04:56 am, Hans Reiser wrote:
>
>>>On December 6, 2001 04:41 am, you wrote:
>>>
>>>>ReiserFS is an Htree by your definition in your paper, yes?
>>>>
>>>You've got a hash-keyed b*tree over there.  The htree is fixed depth.
>>>
>>B*trees are fixed depth.  B-tree usually means height-balanced.  
>>
>
>I was relying on definitions like this:
>
>  B*-tree
>
>  (data structure)
>
>  Definition: A B-tree in which nodes are kept 2/3 full by redistributing
>  keys to fill two child nodes, then splitting them into three nodes.
>

This is the strangest definition I have read.  Where'd you get it?

>
>
>To tell the truth, I haven't read your code that closely, sorry, but I got 
>the impression that you're doing rotations for balancing no?  If not then 
>

What are rotations?

>
>have you really got a b*tree?
>
>--
>Daniel
>
>