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https://issues.apache.org/jira/browse/ARIES-858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13285039#comment-13285039
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Guillaume Nodet commented on ARIES-858:
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I've added a better namespace registry which should fix the concurrency issues.
> Build break: Blueprint container sometimes fails to start, causing
> application test failures
> --------------------------------------------------------------------------------------------
>
> Key: ARIES-858
> URL: https://issues.apache.org/jira/browse/ARIES-858
> Project: Aries
> Issue Type: Bug
> Components: Blueprint
> Reporter: Holly Cummins
> Assignee: Holly Cummins
> Priority: Blocker
>
> Since build ARES-1461, we're seeing around 13 failures, although the exact
> tests which fail varies slightly. Usually there's a failure in
> org.apache.aries.application.runtime.itests.IsolatedRuntimeTest and
> org.apache.aries.application.runtime.itests.OBRResolverAdvancedTest.
> The root cause seems to be an NPE in NamespaceHandlerRegistryImpl:
> [Blueprint Extender: 2] ERROR
> org.apache.aries.blueprint.container.BlueprintContainerImpl - Unable to start
> blueprint container for bundle
> org.apache.aries.application.default.local.platform
> java.lang.NullPointerException
> at java.util.LinkedList.remove(LinkedList.java:792)
> at java.util.LinkedList.remove(LinkedList.java:226)
> at
> org.apache.aries.blueprint.namespace.NamespaceHandlerRegistryImpl$LRUMap.get(NamespaceHandlerRegistryImpl.java:682)
> at
> org.apache.aries.blueprint.namespace.NamespaceHandlerRegistryImpl.getSchema(NamespaceHandlerRegistryImpl.java:243)
> at
> org.apache.aries.blueprint.namespace.NamespaceHandlerRegistryImpl.access$200(NamespaceHandlerRegistryImpl.java:74)
> at
> org.apache.aries.blueprint.namespace.NamespaceHandlerRegistryImpl$NamespaceHandlerSetImpl.getSchema(NamespaceHandlerRegistryImpl.java:502)
> at
> org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:291)
> at
> org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:242)
> This issue seems to have been introduced in revision 1341258 on 22.05.2012
> 01:12:57, "Improve concurrency in the namespace registry".
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