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Date: Mon, 25 Mar 2013 14:26:03 +0400
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 <CABzHfVmx_Ns97CUq6jyJo4DOCZyhi=b7k_tx+u1rqS06VGqNfA@mail.gmail.com>
Subject: Re: Help Required
From: Konstantin Kolinko <knst.kolinko@gmail.com>
To: Tomcat Developers List <dev@tomcat.apache.org>
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2013/3/25 Chinmoy Chakraborty <cchinu@gmail.com>:
> Guys,
>
> I am getting following error (i am using a load balancer IIS7 for Tomcat
> instances (7.0.29):
>
> 03-21@21:34:3022907761 ERROR [ajp-bio-8009-exec-1]
>  ecruiser.control.SystemPhaseListener     - Save state error
> java.lang.NullPointerException
> at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:214)
> at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
> at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at ecruiser.util.LogFilter.doFilter(LogFilter.java:29)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at labware.web.control.WebLIMSFilter.doFilter(WebLIMSFilter.java:37)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
> at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
> at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
> at
> org.apache.catalina.ha.session.JvmRouteBinderValve.invoke(JvmRouteBinderValve.java:219)
> at
> org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:333)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
> at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200)
> at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
> at
> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> at java.lang.Thread.run(Unknown Source)


1. Read here:
http://tomcat.apache.org/lists.html#tomcat-users

You have to ask on the users@ list, not the dev@ one.

> It seems the error is coming from
>
> at
> org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:333)
>
> getNext() is returning NULL.
>

2. Why?

>From your stacktrace that call succeeded
(calling JvmRouteBinderValve.invoke(..) and further down the request
processing chain).

>From your stacktrace, the NPE happens in ecruiser.control.SystemPhaseListener.
I do not know what that class is and what it is doing. It is not ours.

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