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https://issues.apache.org/jira/browse/OAK-1585?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Reschke resolved OAK-1585.
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Resolution: Fixed
> rollback logic issues incorrect Updates
> ---------------------------------------
>
> Key: OAK-1585
> URL: https://issues.apache.org/jira/browse/OAK-1585
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: mongomk
> Affects Versions: 0.19
> Reporter: Julian Reschke
> Assignee: Julian Reschke
> Fix For: 0.20
>
> Attachments: OAK-1585.diff
>
>
> The commit logic tries to roll back changes by reversing the update
> operations and applying them using ds.createOrUpdate().
> However, when the operations that needs to be undone is a "create", the
> generated Update will only contain removal of properties, but no setting of
> "_id". If, at this point, the document does not exist in the persistence, a
> new empty document will be created,
> It appears that this problem can be avoided by using findAndUpdate() instead
> of createOrUpdate().
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