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https://issues.apache.org/jira/browse/OAK-2562?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcel Reutegger resolved OAK-2562.
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Resolution: Fixed
Looks stable. Resolving as fixed.
> DiffCache is inefficient
> ------------------------
>
> Key: OAK-2562
> URL: https://issues.apache.org/jira/browse/OAK-2562
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: core, mongomk
> Affects Versions: 1.0
> Reporter: Marcel Reutegger
> Assignee: Marcel Reutegger
> Fix For: 1.1.8, 1.0.13
>
>
> The diffCache in DocumentNodeStore can be quite inefficient in some cases. It
> may become ineffective even for rather recent commits.
> The diffCache contains entries for changes of a commit. E.g. it may have an
> entry that says between revision r7-0-1 and r8-0-1 the following happened
> under /foo: 'bar' was modified, 'baz' was added, etc. The problem now is,
> that the revision range in the diffCache refers to the revision of the commit
> and its base version, whereas on runtime, the diff calls may likely happen
> for other revision ranges. The further down the tree the node state
> comparison happens, the more likely it is that the base state has a different
> revision than the entry in the cache. The DocumentNodeStore attempts to
> 'link' node states back in time to avoid reading the complete tree at a
> different revision after each commit.
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