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https://issues.apache.org/jira/browse/JCR-1414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12573204#action_12573204
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Thomas Mueller commented on JCR-1414:
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Committed in revision 631905.
This is quite a large patch, sorry! To test it, first configure the data store
in the src/test/repository/repository.xml (for example: <DataStore
class="org.apache.jackrabbit.core.data.FileDataStore"></DataStore>), and then
run the test case org.apache.jackrabbit.core.data.GCConcurrentTest with the
system property jackrabbit.test.scale set to 100 or larger. By default this
test case is very quick and will not find the problem.
> Data store garbage collection: inUse not correctly synchronized
> ---------------------------------------------------------------
>
> Key: JCR-1414
> URL: https://issues.apache.org/jira/browse/JCR-1414
> Project: Jackrabbit
> Issue Type: Bug
> Components: jackrabbit-core
> Affects Versions: 1.4, core 1.4.1
> Reporter: Thomas Mueller
> Assignee: Thomas Mueller
> Fix For: core 1.4.2
>
>
> Access to the fields DbDataStore.inUse and FileDataStore.inUse is not
> synchronized.
> This is a problem when concurrently calling GarbageCollector.deleteUnused()
> and accessing the data store (ConcurrentModificationException is thrown).
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