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From "Aditya Gujrathi (JIRA)" <j...@apache.org>
Subject [jira] Created: (CXF-2772) CLONE -OutOfMemoryError with many service endpoints
Date Tue, 20 Apr 2010 09:40:40 GMT
CLONE -OutOfMemoryError with many service endpoints
---------------------------------------------------

                 Key: CXF-2772
                 URL: https://issues.apache.org/jira/browse/CXF-2772
             Project: CXF
          Issue Type: Bug
          Components: Bus
    Affects Versions: 2.2.5
         Environment: Windows 7 x64 Sun JDK 1.6.0_17-b04), Java HotSpot(TM) 64-Bit Server
VM (build 14.3-b01, mixed mod;
IBM J9 JDK 64bit IBM J9 VM (build 2.4, J2RE 1.6.0 IBM J9 2.4 AIX ppc64-64 jvmap6460sr5
JBoss 5.1.0.GA + JBossWS-CXF 3.2.2.GA
            Reporter: Aditya Gujrathi


I am deploying an EAR in JBoss which exposes many (approx. 120) endpoints, each of those publish
a simple WSDL (2 services with 1 parameter) - demo attached, if necessary I can add a private
attachment with the real world EAR.
When invoking these service endpoints, CXF always scans the entire EAR and (re)builds the
service endpoint registry.

Performance with many (10-20) concurrent service calls degrades and memory consumption increases
steadily, ultimately leading to an OutOfMemoryException in JBoss. It seems the endpoints cannot
be found in the cache and so the entire registry is rebuilt.

In a simple test it showed that simply displaying the service endpoints exposed WSDL is sufficient
to trigger the problematic behaviour:
{code:title=JBoss server.log|borderStyle=solid}
2010-04-06 10:47:34,861 DEBUG [org.springframework.beans.factory.support.DefaultListableBeanFactory]
Invoking init method  'publish' on bean with name 'Vvpvzfpr'
2010-04-06 10:47:34,862 INFO  [org.apache.cxf.service.factory.ReflectionServiceFactoryBean]
Creating Service {http://vvpvzfpr.vvp.ta2mig.itsv.at/}VvpvzfprService from class at.itsv.ta2mig.vvp.vvpvzfpr.IVvpvzfpr
2010-04-06 10:47:34,868 INFO  [org.apache.cxf.endpoint.ServerImpl] Setting the server's publish
address to be http://127.0.0.1:8080/ta2mig-vvptest1-ear-ta2mig-vvptest1-service-BUILD/Vvpvzfpr
2010-04-06 10:47:34,871 INFO  [org.apache.cxf.common.injection.ResourceInjector] failed to
resolve resource at.itsv.ta2mig.vvp.vvpvzfpr.Vvpvzfpr/connectionFactory
2010-04-06 10:47:34,872 DEBUG [org.springframework.beans.factory.support.DefaultListableBeanFactory]
Finished creating instance of bean 'Vvpvzfpr'
{code}

This is for every service at every call, please ignore the "failed to resolve resource ..."
as the datasource is not available in the local test environment.

Metro does not show this behaviour and reacts very fast with minimum memory consumption, but
we cannot easily switch the entire web service stack at this time and I don't believe CXF
has such a problem with many service endpoints... however since even calling the WSDL from
JBoss' web interface triggers the problem, the app cannot be blamed...

Memory analysis with Eclipse MAT shows that the class org.apache.cxf.common.util.CacheMap
grows excessively large, will attach some screenshots (also tested with jVisualVM) and logs
later.

Possibly related bugs:

Memory Leak in WSDLManagerImpl - SchemaCacheMap
CXF-1621 
Memory leak due to literal keys in WSDLDefinition map
CXF-1639
performance of repeated calls to jaxws.Service.createPort is poor, jaxb context is created
every time
CXF-850


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