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From "David Clemens (JIRA)" <>
Subject [jira] Commented: (STR-3143) In Tomcat, when restarting a webapp, the struts-core-1.3.8.jar remains "in-use" preventing dynamic redeployment
Date Tue, 20 May 2008 15:37:05 GMT


David Clemens commented on STR-3143:

Thank you for three helpful responses.

Niall: this sounds very relevant, but I confirmed we are already using Digester 1.8.  I checked
both the webapp jars and the common/lib just in case.

Paul:  I was not able to figure out how to download 1.3.10, but I tried the 1.3.9 jars and
found the same problem.  I would still like to test 1.3.10 if you can tell me how to get it,
but if it does solve the problem, I should still be hesitant to deploy an alpha version in
production with thousands of users, right?

Matthieue:  We do not declare each context explicitly, but I created a Tomcat/conf/context.xml
file with what I hope is a common Context declaration the will be used by all dynamically
deployed contexts, with antiJARLocking="true".  I had high hopes, but this did not solve the
problem.  The struts-core-1.3.9.jar was the only file that could not be deleted.  Do you think
I should need to have specific Context descriptors for each webapp, in each .war?

Thanks again for your collective help.

> In Tomcat, when restarting a webapp, the struts-core-1.3.8.jar remains "in-use" preventing
dynamic redeployment
> ---------------------------------------------------------------------------------------------------------------
>                 Key: STR-3143
>                 URL:
>             Project: Struts 1
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.3.8
>         Environment: Tomcat 5.0, Sun Java 1.5 on Windows XP or 2000
>            Reporter: David Clemens
>            Priority: Minor
>             Fix For: 1.3.10
> We recently upgraded from an older struts.jar to struts 1.3.8.  Since then, when we try
to deploy a new .war file dynamically in Tomcat, it fails because Tomcat is unable to delete
just one file-- the struts-core-1.3.8.jar.  That file remains "in-use" until the entire Tomcat
webserver is restarted.  It is as if a thread is started by Struts that does not exit nicely
when interrupted.  Or perhaps there is some kind of special class loader used by Struts that
prevents the Tomcat webapp class loader from flushing some class from this jar.
> I'm sorry if this problem is already known, but I could not find any issues that matched.

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