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  1. JBoss Web Services
  2. JBWS-4088

Remove org.apache.cxf.staxutils.W3CDOMStreamWriter from context to prevent memory leak in CXF

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    • Enhancement
    • Status: Resolved (View Workflow)
    • Minor
    • Resolution: Out of Date
    • None
    • None
    • None
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    Description

      I think the explanation comes from the way the response context is kept within the ClientImpl. The ClientImpl has the following:

      protected Map<Thread, Map<String, Object>> responseContext = Collections.synchronizedMap(new WeakHashMap<Thread, Map<String, Object>>());

      and the getResponseContext() is implemented this way:

      public Map<String, Object> getResponseContext() {
      if (!responseContext.containsKey(Thread.currentThread()))

      { responseContext.put(Thread.currentThread(), new HashMap<String, Object>()); }

      return responseContext.get(Thread.currentThread());
      }

      Now, in the customer case, I believe the threads that serve as keys to the weak hashmap are never GCed (perhaps because they simply come from a thread pool that reuses them) and I don't see the response context being explicitly cleaned up in cxf except when the clientimpl is destroyed (which does not happen often in customer case as the clients are pooled).
      I would suggest to try explicitly cleaning up the response message context contents.

      The customer has successfully done this using this on their client side:
      dispatcher.getResponseContext().remove("org.apache.cxf.staxutils.W3CDOMStreamWriter");

      Is it possible to have this fix added to JBossWS as an enhancement? Full details are on the case link.

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              Unassigned Unassigned
              rhn-support-dboeren David Boeren
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                Updated:
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