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From Mark Eggers <>
Subject Re: tomcat randomly undeploys and redeploys the applications
Date Wed, 02 Apr 2014 20:30:34 GMT

On 4/2/2014 1:05 PM, Christopher Schultz wrote:
> Hash: SHA256
> Chuck,
> On 4/2/14, 8:21 AM, Caldarale, Charles R wrote:
>>> From: Elias Kopsiaftis [] Subject: tomcat
>>> randomly undeploys and redeploys the applications
>>> I deploy the application, then in the log file catalina.out i get
>>> many messages from WebappClassLoader clearReferencesThreads
>>> saying threads appear to have started but have failed to stop
>> This is an indication that your webapp is not managing its threads
>> properly.
>>> then finally, Ill get a message from HostConfig checkResources
>>> that says its undeploying the context, and then it redeploys.
>> This is sometimes caused by incorrect timestamps on the bits of the
>> webapp that Tomcat monitors, or an incorrect clock setting on the
>> system Tomcat is running on.  The mismatch makes it appear that the
>> webapp is being updated continuously.
> I've found that in development, a single update can cause Tomcat to go
> into a loop of redeployments, re-deploying my web application every
> few seconds or so. If I let it go, it does finally stop reloading and
> settle down.

Can you describe your development environment a little bit, and any 
thoughts as to what might trigger this loop of redeployments?

I've not seen this, but it could explain some issues some the developers 
I support are seeing.

I believe Tomcat will emit a log message informing the administrator
> which file has triggered the reload, but I think it's at the DEBUG log
> level.
> - -chris


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