memory leak happens under stress when CPortletAdapter portlets are asked to clean themselves up when the session ends.

It looks like when the PortletStateManager is asked to clear the window state for a particular session, that session cannot be obtained due to the response already being committed. And since this exception is thrown, the subsequent cleaning of the static channelStateMap Map does not happen, which results in a memory leak.

Following is the error message

ERROR [http-8080-Processor128] portal.ChannelManager.[] Jan/20 22:12:53 -
Error sending session done event to channel
org.jasig.portal.MultithreadedPrivilegedCacheableDirectResponseCharacterChan
nelAdapter@1f91311

java.lang.IllegalStateException: Cannot create a session after the response
has been committed

at
org.apache.coyote.tomcat5.CoyoteRequest.doGetSession(CoyoteRequest.java:2270
)

at
org.apache.coyote.tomcat5.CoyoteRequest.getSession(CoyoteRequest.java:2116)

at
org.apache.coyote.tomcat5.CoyoteRequestFacade.getSession(CoyoteRequestFacade
.java:526)

at
org.apache.coyote.tomcat5.CoyoteRequestFacade.getSession(CoyoteRequestFacade
.java:531)

at
javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWr
apper.java:223)

at
org.jasig.portal.container.services.information.PortletStateManager.clearSta
te(PortletStateManager.java:370)

at
org.jasig.portal.channels.portlet.CPortletAdapter.receiveEvent(CPortletAdapt
er.java:342)

at
org.jasig.portal.MultithreadedCharacterChannelAdapter.receiveEvent(Multithre
adedCharacterChannelAdapter.java:62)

at
org.jasig.portal.ChannelManager.finishedSession(ChannelManager.java:269)

at
org.jasig.portal.UserInstance.valueUnbound(UserInstance.java:676)

at
org.apache.catalina.session.StandardSession.removeAttributeInternal(Standard
Session.java:1566)

at
org.apache.catalina.session.StandardSession.expire(StandardSession.java:708)

at
org.apache.catalina.session.StandardSession.expire(StandardSession.java:632)

at
org.apache.catalina.session.StandardSession.invalidate(StandardSession.java:
1051)

at
org.apache.catalina.session.StandardSessionFacade.invalidate(StandardSession
Facade.java:149)

at org.jasig.portal.LogoutServlet.doGet(LogoutServlet.java:142)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:237)

at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:157)

at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:214)

at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex
t.java:104)

at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)

at
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContext
Valve.java:198)

at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:152)

at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex
t.java:104)

at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)

at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137
)

at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex
t.java:104)

at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117
)

at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex
t.java:102)

at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)

at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:109)

at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex
t.java:104)

at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)

at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)

at
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)

at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)

at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne
ction(Http11Protocol.java:705)

at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)

at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
a:683)

at java.lang.Thread.run(Thread.java:534)