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https://issues.apache.org/jira/browse/OAK-1342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcel Reutegger updated OAK-1342:
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    Fix Version/s: 0.19
         Assignee: Marcel Reutegger

> Cascading document history
> --------------------------
>
>                 Key: OAK-1342
>                 URL: https://issues.apache.org/jira/browse/OAK-1342
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: core, mongomk
>            Reporter: Marcel Reutegger
>            Assignee: Marcel Reutegger
>             Fix For: 0.19
>
>
> The document history is current structured in a flat list of references from 
> the main document to the previous documents (the _prev sub document).
> Garbage collection should make sure this list is kept within bounds, but 
> there will still be documents with many valid changes that cannot be garbage 
> collected easily. One example is the root document, which acts as the commit 
> root for branches and their merge commits.
> To support many more changes on a document, the _prev list should be 
> structured more similar to a b-tree with intermediate documents that can span 
> multiple previous documents or other intermediate documents.



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