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https://issues.apache.org/jira/browse/OAK-1945?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alex Parvulescu updated OAK-1945:
---------------------------------

    Attachment: MergeTest.java.patch

attaching test case. the culprit is here [0]. I don't have a good idea for a 
patch yet, maybe adding to the _fastEquals_ check another clause to compare the 
_before_ state to the current head?
[~jukkaz] any ideas?


[0] 
https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/SegmentNodeStore.java#L415

> SegmentMK #merge inconsistency
> ------------------------------
>
>                 Key: OAK-1945
>                 URL: https://issues.apache.org/jira/browse/OAK-1945
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: segmentmk
>            Reporter: Alex Parvulescu
>         Attachments: MergeTest.java.patch
>
>
> The SegmentMK doesn't respect the #merge contract when there is a builder 
> that has no local changes passed in.
> This popped-up while I was reworking the restore parts and with the new 
> compaction code, the only option is to pass in a NodeState#Builder builder 
> which is considered by the #merge method as a noop and therefore ignored.



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