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https://issues.apache.org/jira/browse/OAK-3646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15028698#comment-15028698
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Marcel Reutegger commented on OAK-3646:
---------------------------------------

The name RevisionVector is inspired by [Version 
Vectors|https://en.wikipedia.org/wiki/Version_vector]. A revision vector works 
very similar to a version vector. The third update rule is a bit different with 
revision vectors, because a revision is bound to the local clock. In Oak the 
third rule is implemented by OAK-3388 where the background read waits until the 
local clock is passed the most recent reported external _lastRev and the 
timestamp of the new head revision is therefore newer than the timestamps of 
the most recent visible external revisions.

> Inconsistent read of hierarchy 
> -------------------------------
>
>                 Key: OAK-3646
>                 URL: https://issues.apache.org/jira/browse/OAK-3646
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: core, documentmk
>    Affects Versions: 1.0, 1.2
>            Reporter: Marcel Reutegger
>            Assignee: Marcel Reutegger
>             Fix For: 1.4
>
>
> This is similar to OAK-3388, but about hierarchy information like which child 
> nodes exist at a given revision of the parent node. This issue only occurs in 
> a cluster.



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