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https://issues.apache.org/jira/browse/OAK-1753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13976642#comment-13976642
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Michael Marth commented on OAK-1753:
------------------------------------

/cc [~jukkaz]

> Calling initializer after InitialContent.initialize() on a 
> DocumentRootBuilder fails
> ------------------------------------------------------------------------------------
>
>                 Key: OAK-1753
>                 URL: https://issues.apache.org/jira/browse/OAK-1753
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: core
>            Reporter: Amit Jain
>         Attachments: OAK-1753.patch
>
>
> Calling an initializer after calling InitialContent.initialize() fails when 
> working with the DocumentNodeStore.
> Same test passes on a SegmentNodeStore or when the 
> InitialContent.initialize() is not called.
> Attached a test case patch which simulates the above condition. The test uses 
> a UserInitializer to initialize the default users - admin & anonymous. The 
> above failure causes problems when upgrading from a JR2 repository to oak 
> using the {{RepositoryUpgrade}} class.
> The stack trace from the test is as below.
> {code}
> org.apache.jackrabbit.mk.api.MicroKernelException: The node 1:/home was 
> already added in revision
> r1458906b9a2-0-1, before
> r1458906e9a1-0-1; document:
> {_id=1:/home,
> _modified=1398163290,
> _modCount=1,
> _commitRoot={r1458906b9a2-0-1=0},
> _children=true,
> _deleted={r1458906b9a2-0-1=false},
> jcr:primaryType={r1458906b9a2-0-1="nam:rep:AuthorizableFolder"}},
> revision order:
> 1:
>  r1458902f08c-0-1:r1458902f0a3-0-0
>       at 
> org.apache.jackrabbit.oak.plugins.document.Commit.checkConflicts(Commit.java:533)
>       at 
> org.apache.jackrabbit.oak.plugins.document.Commit.createOrUpdateNode(Commit.java:451)
>       at 
> org.apache.jackrabbit.oak.plugins.document.Commit.applyToDocumentStore(Commit.java:336)
>       at 
> org.apache.jackrabbit.oak.plugins.document.Commit.prepare(Commit.java:213)
>       at 
> org.apache.jackrabbit.oak.plugins.document.Commit.apply(Commit.java:182)
>       at 
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreBranch.persist(DocumentNodeStoreBranch.java:173)
>       at 
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreBranch.persist(DocumentNodeStoreBranch.java:85)
>       at 
> org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreBranch.persist(DocumentNodeStoreBranch.java:1)
>       at 
> org.apache.jackrabbit.oak.spi.state.AbstractNodeStoreBranch$Persisted.persistTransientHead(AbstractNodeStoreBranch.java:621)
>       at 
> org.apache.jackrabbit.oak.spi.state.AbstractNodeStoreBranch$Persisted.setRoot(AbstractNodeStoreBranch.java:564)
>       at 
> org.apache.jackrabbit.oak.spi.state.AbstractNodeStoreBranch.setRoot(AbstractNodeStoreBranch.java:219)
>       at 
> org.apache.jackrabbit.oak.plugins.document.DocumentRootBuilder.purge(DocumentRootBuilder.java:196)
>       at 
> org.apache.jackrabbit.oak.plugins.document.DocumentRootBuilder.getNodeState(DocumentRootBuilder.java:107)
>       at 
> org.apache.jackrabbit.oak.plugins.document.InitializerTest.testInitializerMongo(InitializerTest.java:33)
> {code}



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