Details
Critical Description
I have recently upgraded my WebApp to MyFaces 2.1.15 and after that I am experiencing the below error infrequently,
java.lang.NullPointerException: null values not allowed
at org.apache.commons.collections.map.AbstractReferenceMap.put(AbstractReferenceMap.java:251)
at org.apache.myfaces.application.viewstate.SerializedViewCollection.add(SerializedViewCollection.java:162)
at org.apache.myfaces.application.viewstate.ServerSideStateCacheImpl.saveSerializedViewInServletSession(ServerSideStateCacheImpl.java:300)
at org.apache.myfaces.application.viewstate.ServerSideStateCacheImpl.saveSerializedView(ServerSideStateCacheImpl.java:578)
at org.apache.myfaces.renderkit.html.HtmlResponseStateManager.saveState(HtmlResponseStateManager.java:146)
at org.apache.myfaces.application.StateManagerImpl.saveView(StateManagerImpl.java:198)
at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.renderView(FaceletViewDeclarationLanguage.java:2052)
at org.apache.myfaces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:305)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:116)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:241)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:199)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:242)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:216)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:132)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:338)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:25)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:74)
I have set the following in web.xml file,
org.apache.myfaces.CACHE_OLD_VIEWS_IN_SESSION_MODE = hard-soft
org.apache.myfaces.NUMBER_OF_VIEWS_IN_SESSION = 30,
org.apache.myfaces.SERIALIZE_STATE_IN_SESSION= false,
javax.faces.STATE_SAVING_METHOD = false
I have checked similar issue in earlier version too,
https://issues.apache.org/jira/browse/MYFACES-1296
but this seems to be little different from the exception stack.
In my WebApp, this issue comes infrequently. i.e. it comes randomly in random pages.
Please look into it since it seems to be an issue with the version 2.1.15