grails-core: Intermittent 404 error when deployed in Tomcat 7

Steps to Reproduce

Please fork my sample application

1. Create a prod war
2. Deploy it in one Tomcat 7 (I’m using apache-tomcat-7.0.55)
3. Try to access http://localhost:8080/teste2/teste/index. Sometimes it will display the page and others will show the /error page. To test the intermittent behavior just restart and redeploy the same war.

Expected Behaviour

The expected in this scenario is to always show the page, since it’s not secured. I’m not confident if this is a Grails core or Spring Security plugin bug, so I’m reporting it here.

Actual Behaviour

Sometimes the flow will end in the /error page, and others will display it correctly.

Environment Information

• Operating System: Windows 8.1 or 10
• Grails Version: 3.1.4
• Groovy Version: 2.4.6
• JVM Version: 1.7.0_79
• Tomcat Version: 7.0.55

Debug information

I nailed down to UrlMappingsHandlerMapping class, you can see that I created a new class to debug it. I can notice that sometimes it handles correctly and return the org.grails.web.mapping.mvc.GrailsControllerUrlMappingInfo intance, but sometimes the flow will use one org.grails.web.mapping.DefaultUrlMappingInfo instance, causing the 404 error. Maybe the problem is inside the urlMappingsHolder class.

Here’s the debug that will be printed when the flow ends incorrectly

DEBUG org.grails.web.mapping.DefaultUrlMappingsHolder - Attempting to match URI
[/teste/index] with pattern [/oauth/(*)/(*)]
DEBUG org.grails.web.mapping.DefaultUrlMappingsHolder - Attempting to match URI
[/teste/index] with pattern [/(*)/(*)?/(*)?(.(*))?]
DEBUG org.grails.web.mapping.DefaultUrlMappingsHolder - Matched URI [/teste/inde
x] with pattern [/(*)/(*)?/(*)?(.(*))?], adding to posibilities
INFO org.grails.web.mapping.mvc.CwiUrlMappingsHandler - LOOP in UrlMappingsInfo
availables for the match: org.grails.web.mapping.mvc.GrailsControllerUrlMappings
@6399bced
INFO org.grails.web.mapping.mvc.CwiUrlMappingsHandler - UrlMappingInfo: /(*)/(*)
?/(*)?(.(*))? , class org.grails.web.mapping.DefaultUrlMappingInfo
INFO org.grails.web.mapping.mvc.CwiUrlMappingsHandler - RETURN NULL!
INFO org.grails.web.mapping.mvc.CwiUrlMappingsHandler - getHandlerInternal() : n
ull

Any report is really appreciated, since this error is blocking us from deploying this application in the production environment (run-app works).