java.util.EmptyStackException occuring from time to time

[Thomas Haselberger <th...@ucpmorgen.com>]

Hello,

In a cocoon app (2.0.4), I get these errors from time to time - any
hints how to track the problem ?

java.util.EmptyStackException
	at org.apache.commons.collections.ArrayStack.peek(Unknown
Source)
	at
org.apache.cocoon.components.EnvironmentStack.getCurrent(EnvironmentStac
k.java:70)
	at
org.apache.cocoon.components.CocoonComponentManager.lookup(CocoonCompone
ntManager.java:224)
	at
org.apache.cocoon.www.sitemap_xmap.process(/var/ucp/solutions/idc/tomcat
/work/Standalone/localhost/_/cocoon-files/org/apache/cocoon/www/sitemap_
xmap.java:2015)
	at org.apache.cocoon.sitemap.Handler.process(Handler.java:227)
	at org.apache.cocoon.sitemap.Manager.invoke(Manager.java:173)
	at
org.apache.cocoon.sitemap.SitemapManager.process(SitemapManager.java:152
)
	at org.apache.cocoon.Cocoon.process(Cocoon.java:579)
	at
org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1043)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java)
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:247)
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:193)
	at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.java:243)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:566)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
72)
	at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.java:190)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:566)
	at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.ja
va:246)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:564)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
72)
	at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:234
7)
	at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:180)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:566)
	at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherVa
lve.java:170)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:564)
	at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:170)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:564)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
72)
	at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:174)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:566)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
72)
	at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.ajp.tomcat4.Ajp13Processor.process(Ajp13Processor.java:458)
	at
org.apache.ajp.tomcat4.Ajp13Processor.run(Ajp13Processor.java:551)
	at java.lang.Thread.run(Thread.java:536)

 
 
--
thomas haselberger

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