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List:       tomcat-user
Subject:    Re: Clustering on Tomcat 5.0.26 with DeltaManager
From:       "Filip Hanik - Dev" <devlists () hanik ! com>
Date:       2004-06-09 17:12:44
Message-ID: 03a101c44e45$009066f0$dd01dc0a () Corp ! LaQuinta ! com
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you should also see a stack trace, please post that one to the list, 
that should give us all the info we need. Most likely is that one of your attributes are not serializable

Filip

----- Original Message ----- 
From: "Matt Smith" <matt@incursiontech.com>
To: <tomcat-user@jakarta.apache.org>
Sent: Wednesday, June 09, 2004 12:05 PM
Subject: Clustering on Tomcat 5.0.26 with DeltaManager


> Any info on the following would be appreciated, cannot see the exception
> being generated.  I have the logging level set to debug.  I am using a
> filter to wrap the session, but I the valve should never see this so I
> would not expect a ClassCastException.  Is there any way to tell the
> logging in tomcat to dump the exception???
>  
> In my log, I am seeing the following
>  
> StandardContext[]2004-06-06 21:39:25,347 ERROR [http-80-Processor24]
> org.apache.catalina.cluster.session.DeltaManager - Unable to serialize
> delta request
> 
> Looking at the Delta Manager, somewhere here is the problem, in request
> Completed...
>  
>            try {
>                DeltaSession session = (DeltaSession)
> findSession(sessionId);
>                DeltaRequest deltaRequest = session.getDeltaRequest();
>                SessionMessage msg = null;
>                if (deltaRequest.getSize() > 0) {
>    
>                    byte[] data = unloadDeltaRequest(deltaRequest);
>                    msg = new SessionMessageImpl(name,
> SessionMessage.EVT_SESSION_DELTA,
>                                             data, sessionId,
>  
> sessionId+System.currentTimeMillis());
>                    session.resetDeltaRequest();
>                } else if ( !session.isPrimarySession() ) {
>                    msg = new SessionMessageImpl(getName(),
>  
> SessionMessage.EVT_SESSION_ACCESSED,
>                                          null,
>                                          sessionId,
>  
> sessionId+System.currentTimeMillis());
>                }
>                session.setPrimarySession(true);
>                //check to see if we need to send out an access message
>                if ( (msg == null) ) {
>                    long replDelta = System.currentTimeMillis() -
> session.getLastTimeReplicated();
>                    if ( replDelta > (getMaxInactiveInterval()*1000) ) {
>                        msg = new SessionMessageImpl(getName(),
>  
> SessionMessage.EVT_SESSION_ACCESSED,
>                                              null,
>                                              sessionId,
>  
> sessionId+System.currentTimeMillis());
>                    }
>                    
>                }
>                
>                //update last replicated time
>                if ( msg != null )
> session.setLastTimeReplicated(System.currentTimeMillis());
>                return msg;
>            }
>            catch (IOException x) {
>                log.error("Unable to serialize delta request", x);
>                return null;
>            }
> 
>  
> Thanks,
>  
> m.
> 


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