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https://issues.apache.org/jira/browse/OAK-464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13511436#comment-13511436
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Michael Dürig commented on OAK-464:
-----------------------------------

bq. Well, it would increase complexity of the MicroKernel implementations.

Please go back to 
https://issues.apache.org/jira/browse/OAK-464?focusedCommentId=13511308&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13511308
 and read.
That particular functionality *is already there* in the Microkernel. Making it 
more explicit will by no means increase complexity but rather to the contrary. 
It will help clarifying a rather obscure part of the current Microkernel 
implementation: namely how conflicts are handled. 

BTW, this is something I criticised over a ago year already [1] and which was 
subsequently extenuated [2].

[1] 
http://wiki.apache.org/jackrabbit/Transactional%20model%20of%20the%20Microkernel%20based%20Jackrabbit%20prototype?action=recall&rev=1
[2] 
http://wiki.apache.org/jackrabbit/Transactional%20model%20of%20the%20Microkernel%20based%20Jackrabbit%20prototype?action=diff&rev1=2&rev2=3
                
> RootImpl.rebase() doesn't handle move operations correctly
> ----------------------------------------------------------
>
>                 Key: OAK-464
>                 URL: https://issues.apache.org/jira/browse/OAK-464
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>            Reporter: Michael Dürig
>
> Doing {{RootImpl.rebase()}} causes moves to be changed to remove followed by 
> add. Which causes moves of large sub trees to become very expensive.

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