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From "Bharath Ganesh (JIRA)" <j...@apache.org>
Subject [jira] Created: (CXF-1621) Memory Leak in WSDLManagerImpl - SchemaCacheMap
Date Mon, 02 Jun 2008 06:39:45 GMT
Memory Leak in WSDLManagerImpl - SchemaCacheMap
-----------------------------------------------

                 Key: CXF-1621
                 URL: https://issues.apache.org/jira/browse/CXF-1621
             Project: CXF
          Issue Type: Bug
          Components: Core
    Affects Versions: 2.0.6, 2.1
            Reporter: Bharath Ganesh
            Assignee: Bharath Ganesh


The schemaCacheMap in WSDLManagerImpl has a weak key - WSDLDefinition and value ServiceSchemaInfo.
A key,value pair is inserted into this map while building a service. The entry is never explicitly
removed from this map. Since the map is a WeakHashMap, it is assumed that when the key WSDLDefinition
is weakly referenced, the entry would be removed from the map. But it is seen that the value
ServiceSchemaInfo(the value) holds on to a SchemaInfo which in turn holds on to the ServiceInfo,
which holds the WSDLDefinition through the AbstractPropertiesHolder.
This would mean that the value of the CacheMap always strongly refers to the key, which would
mean the entry would never be removed from the map.
"The value objects in a WeakHashMap are held by ordinary strong references. Thus care should
be taken to ensure that value objects do not strongly refer to their own keys, either directly
or indirectly, since that will prevent the keys from being discarded"

This would mean ServiceInfo, OperationInfo, BindingInfo, WSDLDefinition would all stay in
the VM even after the endpoint is stopped.


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