Stuck thread at popComponentFromEL(UIComponent.java:2084) causing high cpu usage

[DarthKD]

Getting high CPU usage due to Multiple stuck threads at UIComponent.popComponentFromEL (UIComponent.java:2084)

Every thread refers to same line number in UIComponent.java at line 2084. Here is the snippet of thread dump.

javax.faces.component.UIComponent.popComponentFromEL(UIComponent.java:2084)
javax.faces.component.UIComponentBase.publishAfterViewEvents(UIComponentBase.java:2326)
javax.faces.component.UIComponentBase.publishAfterViewEvents(UIComponentBase.java:2314)
javax.faces.component.UIComponentBase.publishAfterViewEvents(UIComponentBase.java:2314)
javax.faces.component.UIComponentBase.publishAfterViewEvents(UIComponentBase.java:2314)
javax.faces.component.UIComponentBase.publishAfterViewEvents(UIComponentBase.java:2314)
javax.faces.component.UIComponentBase.publishAfterViewEvents(UIComponentBase.java:2314)
javax.faces.component.UIComponentBase.doPostAddProcessing(UIComponentBase.java:1986)
javax.faces.component.UIComponentBase.setParent(UIComponentBase.java:459)
javax.faces.component.UIComponentBase$ChildrenList.add(UIComponentBase.java:2772)
javax.faces.component.UIComponentBase$ChildrenList.add(UIComponentBase.java:2742)
com.sun.faces.facelets.tag.jsf.ComponentSupport.addComponent(ComponentSupport.java:527)
com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.addComponentToView(ComponentTagHandlerDelegateImpl.java:354)
com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.addComponentToView(ComponentTagHandlerDelegateImpl.java:337)
com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:222)
javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:135)
javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:96)
com.sun.faces.facelets.tag.jsf.core.ViewHandler.apply(ViewHandler.java:224)
javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:96)
com.sun.faces.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:94)
com.sun.faces.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:88)
com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:313)
com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:372)
com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:351)
com.sun.faces.facelets.impl.DefaultFaceletContext.includeFacelet(DefaultFaceletContext.java:204)
com.sun.faces.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:175)
com.sun.faces.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:94)
com.sun.faces.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:88)
com.sun.faces.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:162)
com.sun.faces.application.view.FaceletViewHandlingStrategy.buildView(FaceletViewHandlingStrategy.java:381)
com.sun.faces.application.view.FaceletViewHandlingStrategy.restoreView(FaceletViewHandlingStrategy.java:289)
com.sun.faces.application.view.MultiViewHandler.restoreView(MultiViewHandler.java:157)
com.ocpsoft.pretty.faces.application.PrettyViewHandler.restoreView(PrettyViewHandler.java:109)
com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:204)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:133)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:201)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:670)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:145)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:728)
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:470)
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:395)
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:316)
com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:137)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:183)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:798)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:808)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:748)

I tried the solution provided in below answer but there are many pages in which we have implemented component binding and it is not possible to change scope of every pages.
https://stackoverflow.com/questions/30093791/stuck-thread-at-uicomponent-popcomponentfromel

I removed below code from UIComponent.java file and it seems to be working.

for (UIComponent topComponent = componentELStack.peek();
     topComponent != this;
     topComponent = componentELStack.peek())
{
   topComponent.popComponentFromEL(context);
}

My question is if i remove the above code will it cause issue somewhere else?

[DarthKD]

As per JSF form/GitHub issue tracker suggestion also add SERIALIZE_SERVER_STATE parameter in web.xml

<context-param>
    <param-name>javax.faces.SERIALIZE_SERVER_STATE</param-name>
    <param-value>true</param-value>
</context-param>

Also, try to change JSF version 2.2 still issue is persists

Environment :

1. JSF 2.3
2. Java 8
3. Primefaces 6.1
4. Tomcat 8.5