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From "Ajit Amitav Das (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CXF-4795) Memory leaks in CXF with spring while using WebClient APIs
Date Wed, 30 Jan 2013 19:45:14 GMT
Ajit Amitav Das created CXF-4795:
------------------------------------

             Summary: Memory leaks in CXF with spring while using WebClient APIs
                 Key: CXF-4795
                 URL: https://issues.apache.org/jira/browse/CXF-4795
             Project: CXF
          Issue Type: Bug
          Components: JAX-RS
    Affects Versions: 2.4.2
            Reporter: Ajit Amitav Das
            Priority: Critical


Problem - We are facing a very weird memory issue while using spring (3.0.5.RELEASE) with
Apache-CXF(2.4.2). We are trying to make a REST(GET) call using Apache CXF WebClient.get().Each
outbound call URL is getting configured as a bean in the Spring Container. 

Description - 
1.Placeholder in Spring where the URL is getting configured as a Bean 
Class Name - AbstractBeanFactory 
private final Set<String> alreadyCreated = Collections.synchronizedSet(new HashSet<String>());


2.Reason 

During the WebClient.get call CXF prepares conduit to channel the message to destination.
Since it is a HTTP call HTTPTransportFactory is used to create HTTP Conduit for the endpoint.

This is done by HTTPTransportFactory.getConduit method. 
HTTPTransportFactory.getConduit invokes HTTPTransportFactory.configure(Object bean, String
name, String extraName) 

  
protected void configure(Object bean, String name, String extraName) { 
        Configurer configurer = bus.getExtension(Configurer.class); 
        if (null != configurer) { 
            configurer.configureBean(name, bean); 
            if (extraName != null) { 
                configurer.configureBean(extraName, bean); 
            } 
        } 
    } 

name parameter value is - {http://<ip>:<port>/<application-context>/guest/96BEEBE3119B4B809F35CFFAF5EA9803/profile}WebClient.http-conduit


extraName parameter value is - http://<ip>:<port>/<application-context>/guest/96BEEBE3119B4B809F35CFFAF5EA9803/profile


Since CXF by default uses SpringBus,the configurer class returned for bus.getExtension(Configurer.class)
call is org.apache.cxf.configuration.spring.ConfigurerImpl . 
This class ends up configuring both the above mentioned URL as bean in Spring. 

This bean names are keep on adding to a Set instance alreadyCreated which never get garbage
collected, and keep increasing the memory footprint and finally causing OutOfMemory issue.


My application is growing with huge memory foot print as the number of outbound calls increases,
we are forced to bounce back the server in frequent intervals

Already put this @http://cxf.547215.n5.nabble.com/memory-leaks-in-CXF-with-spring-while-using-WebClient-APIs-td5721974.html

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