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https://issues.apache.org/jira/browse/JCR-1275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcel Reutegger resolved JCR-1275.
-----------------------------------
Resolution: Fixed
Fix Version/s: 1.5
Assumed lazy consensus and committed the patch in revision: 633405
> NullPointerException in AbstractVersionManager.createVersionHistory()
> ---------------------------------------------------------------------
>
> Key: JCR-1275
> URL: https://issues.apache.org/jira/browse/JCR-1275
> Project: Jackrabbit
> Issue Type: Bug
> Components: jackrabbit-core, versioning
> Reporter: Marcel Reutegger
> Priority: Minor
> Fix For: 1.5
>
> Attachments: JCR-1275.patch
>
>
> Running ConcurrentCheckinMixedTransactionTest with 200 threads results in
> NullPointerExceptions in AbstractVersionManager.
> Exception in thread "Thread-16" java.lang.NullPointerException
> at
> org.apache.jackrabbit.core.version.AbstractVersionManager.createVersionHistory(AbstractVersionManager.java:309)
> at
> org.apache.jackrabbit.core.version.XAVersionManager.createVersionHistory(XAVersionManager.java:145)
> at
> org.apache.jackrabbit.core.ItemImpl.initVersionHistories(ItemImpl.java:785)
> at org.apache.jackrabbit.core.ItemImpl.save(ItemImpl.java:1221)
> at org.apache.jackrabbit.core.SessionImpl.save(SessionImpl.java:897)
> at
> org.apache.jackrabbit.core.ConcurrentCheckinMixedTransactionTest$1$1.execute(ConcurrentCheckinMixedTransactionTest.java:66)
> at
> org.apache.jackrabbit.core.AbstractConcurrencyTest$Executor.run(AbstractConcurrencyTest.java:110)
> at java.lang.Thread.run(Thread.java:619)
> I'm not sure why the node that is created by the current thread is not
> available. I assume that some other thread using XA transactions is
> committing changes while the current thread creates the node. The changes
> from the committing thread then overwrite the node that has been modified by
> the current thread. The write lock is somewhat bypassed in that case.
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