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https://issues.apache.org/jira/browse/ARIES-1089?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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John Ross reassigned ARIES-1089:
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Assignee: John Ross
> Handlers map in NamespaceHandlerSetImpl is unsafe.
> --------------------------------------------------
>
> Key: ARIES-1089
> URL: https://issues.apache.org/jira/browse/ARIES-1089
> Project: Aries
> Issue Type: Bug
> Components: Blueprint
> Reporter: John Ross
> Assignee: John Ross
>
> The NamespaceHandlerSetImpl class uses an unprotected map to store handlers.
> The map is accessible to multiple threads. For example, the thread delivering
> the NamespaceHandler service registration event will store the handler in the
> map and eventually call BlueprintContainerImpl.schedule, which spawns off
> another thread that will look for a handler in the map.
> We appear to be encountering a visibility issue where the
> org.apache.aries.application.resolver.obr bundle will never activate because
> blueprint thinks the required namespace handler is not available. However,
> the logs clearly show the namespace handler being registered anywhere from a
> millisecond to one or two seconds previously.
> Would there be any objections to using a ConcurrentHashMap?
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