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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] [Commented] (OAK-464) RootImpl.rebase() doesn't handle move operations correctly
Date Thu, 06 Dec 2012 15:05:09 GMT

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

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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