[DIGESTER-29] [digester] Loading of resources causes webapp to fail redeploy under Tomcat 5.5.x

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.5
• Fix Version/s: 1.8

Environment

Operating System: other
Platform: Other

• Bugzilla Id: 37034
• Assignee: Unassigned
• Reporter: Rich Feit
• Created: 12/Oct/05 13:06
• Updated: 07/Feb/07 05:35
• Resolved: 07/Feb/07 05:35

Description

This was originally filed against Beehive as
http://issues.apache.org/jira/browse/BEEHIVE-960 , but I've narrowed it down to
either a Digester issue or a Tomcat issue. Tomcat seems to suggest that this is
an issue related to getting resources out of a JAR:

• http://issues.apache.org/bugzilla/show_bug.cgi?id=33830
• http://jakarta.apache.org/tomcat/faq/windows.html#lock

Specifically, Tomcat turned off the behavior that prevents locking of JARs under
Windows. They did this to improve startup time. I don't necessarily agree with
this choice as a default, but if you believe their bug comments and FAQ, this
actually just exposes Windows-specific bugs in the way resources are read out of
JARs.

To reproduce this:

• Run 'ant build war' in the attached directory.
• Copy strutsRedeploy.war into $CATALINA_HOME/webapps.
• Verify that there is a fully-extracted webapp under
  $CATALINA_HOME/webapps/strutsRedeploy.
• Copy strutsRedeploy.war (again) into $CATALINA_HOME/webapps.

Now look in $CATALINA_HOME/webapps/strutsRedeploy – it failed to redeploy, and
the only file left in there is WEB-INF/lib/struts.jar.

I'm attaching a Digester patch that fixes the issue.

Note: the fix for this issue belongs in one of three places:

• Tomcat (which has rejected working around it since it impacts startup time)
• Digester
• XML support in the JDK

Hopefully you'll choose Digester.