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Date: Tue, 24 Jul 2007 15:00:31 -0700 (PDT)
From: "Jarek Gawor (JIRA)" <jira@apache.org>
To: axis-dev@ws.apache.org
Subject: [jira] Created: (AXIS2-3011) ServiceDescription caching leads to
 memory leak
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ServiceDescription caching leads to memory leak
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                 Key: AXIS2-3011
                 URL: https://issues.apache.org/jira/browse/AXIS2-3011
             Project: Axis 2.0 (Axis2)
          Issue Type: Bug
          Components: jaxws
            Reporter: Jarek Gawor


The DescriptionFactoryImpl.createServiceDescription() function attempts to cache/reuse the ServiceDescription objects and that leads to memory leaks.

First, a Hashtable is used for the cache. That means, any ServiceDescription created will always live in the cache and won't ever be reclaimed (and there is no clear cache function). Some sort of WeakHashMap could help the problem so that at least some unused ServiceDescription objects could be reclaimed. 

Second, the createServiceDescription() uses the DescriptionFactory.createClientConfigurationFactory().getClientConfigurationContext() to get the client configuration context. It looks like by default the ClientConfigurationFactory.getClientConfigurationContext() does NOT cache the configuration context. Therefore, each call creates a new configuration object. That means, that by default ServiceDescription will NOT be reused since the configuration context object instance is used to determine if the ServiceDescription should be reused or not (see DescriptionKey.equals() function). 

So, a simple program that calls createServiceDescription() repeatably in a loop (with the same arguments) will quickly run out of memory. 


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