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https://issues.apache.org/jira/browse/CXF-4795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13566968#comment-13566968
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Daniel Kulp commented on CXF-4795:
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Note:  Nabble was not configured properly so the original messages never made 
it to any of the CXF mailing lists.  I've disabled the ability to create new 
messages in the "CXF" category at Nabble.  You will now need to select a 
subforum.  That should prevent this issue in the future.

                
> 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>/user/96BEEBE3119B4B809F35CFFAF5EA9803/detail}WebClient.http-conduit
>  
> extraName parameter value is - 
> http://<ip>:<port>/<application-context>/user/96BEEBE3119B4B809F35CFFAF5EA9803/detail
> 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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