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Posted to users@cocoon.apache.org by Paul Crabtree <pa...@gmail.com> on 2005/04/11 18:30:25 UTC
Strange warning in 2.1.7 about Continuations

Hi all, has anyone come accross this warning before? It started happening 
when we upgraded from Cocoon 2.1.6 to 2.1.7 and from my limited 
understanding of cocoons inner workings it seems to be happening when Cocoon 
tries to clear up old continuations that have expired.

I am running JBoss 3.2.5 on Java 1.4.2_06 on Windows 2003 server.

Thanks in advance.
Paul.
 
16:59:09,899 WARN [Context] Unable to perform background process on manager
java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:782)
at java.util.HashMap$KeyIterator.next(HashMap.java:818)
at 
org.apache.cocoon.components.flow.ContinuationsManagerImpl.invalidateContinuations
(ContinuationsManagerImpl.java:487)
at org.apache.cocoon.components.flow.ContinuationsManagerImpl.access$100(
ContinuationsManagerImpl.java:75)
at 
org.apache.cocoon.components.flow.ContinuationsManagerImpl$WebContinuationsHolder.valueUnbound
(ContinuationsManagerImpl.java:567)
at org.apache.catalina.session.StandardSession.removeAttributeInternal(
StandardSession.java:1565)
at org.apache.catalina.session.StandardSession.expire(StandardSession.java
:708)
at org.apache.catalina.session.StandardSession.isValid(StandardSession.java
:566)
at org.apache.catalina.session.StandardManager.processExpires(
StandardManager.java:782)
at org.apache.catalina.session.StandardManager.backgroundProcess(
StandardManager.java:795)
at org.apache.catalina.core.StandardContext.backgroundProcess(
StandardContext.java:4618)
at 
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren
(ContainerBase.java:1619)
at 
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren
(ContainerBase.java:1628)
at 
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren
(ContainerBase.java:1628)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(
ContainerBase.java:1608)
at java.lang.Thread.run(Thread.java:534)
17:03:11,507 WARN [Context] Unable to perform background process on manager
java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:782)
at java.util.HashMap$KeyIterator.next(HashMap.java:818)
at 
org.apache.cocoon.components.flow.ContinuationsManagerImpl.invalidateContinuations
(ContinuationsManagerImpl.java:487)
at org.apache.cocoon.components.flow.ContinuationsManagerImpl.access$100(
ContinuationsManagerImpl.java:75)
at 
org.apache.cocoon.components.flow.ContinuationsManagerImpl$WebContinuationsHolder.valueUnbound
(ContinuationsManagerImpl.java:567)
at org.apache.catalina.session.StandardSession.removeAttributeInternal(
StandardSession.java:1565)
at org.apache.catalina.session.StandardSession.expire(StandardSession.java
:708)
at org.apache.catalina.session.StandardSession.isValid(StandardSession.java
:566)
at org.apache.catalina.session.StandardManager.processExpires(
StandardManager.java:782)
at org.apache.catalina.session.StandardManager.backgroundProcess(
StandardManager.java:795)
at org.apache.catalina.core.StandardContext.backgroundProcess(
StandardContext.java:4618)
at 
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren
(ContainerBase.java:1619)
at 
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren
(ContainerBase.java:1628)
at 
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren
(ContainerBase.java:1628)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(
ContainerBase.java:1608)
at java.lang.Thread.run(Thread.java:534)