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From "Smuts, Aaron" <Aaron.Sm...@travelocity.com>
Subject RE: TCP lateral cache not shutting down
Date Tue, 02 Aug 2005 17:56:00 GMT
Hi Adam,

I thought I had those as daemon threads.  ?  The udp sender uses such a
thread factory for it's pooled executor.  The udp listener thread is set
as a daemon.  

I'm running in jboss now, and it shuts down fine, but I'm moving back to
Tomcat very soon.

I had the same problem with the memory shrinker.  It was a daemon, but
it didn't seem to stop properly.  I had to tell the pooled executor to

I'll look at the listener thread.

If you solved it, let me know the details, or send a patch.  I'll put it



> -----Original Message-----
> From: Siefker, Adam [mailto:siefker@amazon.com]
> Sent: Tuesday, August 02, 2005 1:40 PM
> To: jcs-users@jakarta.apache.org
> Subject: Re: TCP lateral cache not shutting down
> Aaron,
> In my tomcat logs today I noticed the identical exception that this
> was refering to.
> http://mail-archives.apache.org/mod_mbox/jakarta-jcs-
> users/200503.mbox/%3c000001c526d2$5f5104e0$0200a8c0@prufrock%3e
> How to Repo:
> 1. Configure JCS to have a lateral TCP cache.
> 2. Start tomcat.
> 3. Use cache (?).
> 4. Stop tomcat.
> 5. Start tomcat.
> In the logs will be the exception referrenced in the about email. The
> problem is that while tomcat shut itself down, there are 1 or more
> daemon threads in JCS that is preventing the JVM from exiting. One of
> these threads have attached to the port in question.
> Fix:
> The PooledExecutor in LateralTCPListener and UDPDiscoveryReciever need
> ThreadFactories that create daemon threads.
> LateralTCPListener.ListenerThread may also need to be made as a
daemon. I
> don't remember if I had to make this change or not.
> Adam

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