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https://issues.apache.org/jira/browse/OAK-1751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13979501#comment-13979501
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Marcel Reutegger commented on OAK-1751:
---------------------------------------
The failure is hidden because throwing the MicroKernelException there results
in a retry of the merge in AbstractNodeStoreBranch. If you change it to
IllegalStateException *and* apply the changes to AbstractNodeStoreBranch, you
should see the test fail pretty consistently.
> DocumentNodeStore may detect conflict too late
> ----------------------------------------------
>
> Key: OAK-1751
> URL: https://issues.apache.org/jira/browse/OAK-1751
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: core, mongomk
> Affects Versions: 0.20
> Reporter: Marcel Reutegger
> Assignee: Marcel Reutegger
> Priority: Critical
> Fix For: 1.1
>
>
> Under load and with concurrent commits to the same node it may happen that
> the DocumentNodeStore detects a conflict too late and throws an exception
> like this:
> {noformat}
> MicroKernelException: Unable to annotate our revision with collision marker.
> Our revision: r1458568cc53-0-1, ...
> {noformat}
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