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https://issues.apache.org/jira/browse/OAK-5557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15848350#comment-15848350
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Stefan Egli commented on OAK-5557:
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slowing down the phase during which changes are done that trigger purges
(thereby making sure the purges are spread over more than one 5sec interval)
makes the test fail. also, the test only fails if *during the merge* there is
another merge happening (from another thread).
> incomplete diffManyChildren during commitHook evaluation in a persisted branch
> ------------------------------------------------------------------------------
>
> Key: OAK-5557
> URL: https://issues.apache.org/jira/browse/OAK-5557
> Project: Jackrabbit Oak
> Issue Type: Bug
> Affects Versions: 1.2.14, 1.2.23
> Environment: 'easily' reproducible on 1.2.14
> 'takes longer to' reproduce on 1.2.23
> Reporter: Stefan Egli
> Assignee: Stefan Egli
> Attachments: DocumentNodeStoreBranchesTest.java
>
>
> In oak 1.2 when doing a diffManyChildren as part of running the CommitHooks
> as part of a branch commit, not all child paths are taken into account in
> some cases.
> The problem seems to be related to the [{{_modified}}
> calculation|https://github.com/apache/jackrabbit-oak/blob/jackrabbit-oak-1.2.14/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStore.java#L2242]
> when doing the query for affected child paths. It seems [that
> {{minValue}}|https://github.com/apache/jackrabbit-oak/blob/jackrabbit-oak-1.2.14/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStore.java#L2242]
> is not correctly calculated when doing {{compareAgainstBaseState}} as part
> of a persisted branch.
> Note that the problem can be reproduced very good on 1.2.14, less good but
> still on the latest 1.2 and not in trunk (ie almost 1.6.0).
> Attaching a test case to reproduce
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