John Ross created ARIES-1089:
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Summary: 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
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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