Empty xxx_jsp.java files in Tomcat 8.0.26 work catalina directory

Hi, Dear all

I'm doing Tomcat upgrade for my J2EE server.
When Tomcat is upgraded from 7.0.54 to 8.0.26, I get lots of empty *_jsp.ja=
va files in /opt/apache-tomcat_1/work/Catalina/, for example:

/opt/apache-tomcat_1/work/Catalina/localhost/cmp0307l/org/apache/jsp/webcom=
ponents/jsp/globalpagenotfound_jsp.java

There're six Tomcat servers working in a round-robin manner. Each of the si=
x Tomcat server has lots of empty *_jsp.java files, but they do not share t=
he same group of empty *_jsp.java files. It appears random regarding which =
JSP file gets an empty *_jsp.java and in which Tomcat server.

When I delete a single empty *_jsp.java file in a Tomcat server and restart=
 Tomcat, the previous empty *_jsp.java is generated and not empty.

Has anyone ever got similar situation? Any clue of the root cause?

Appreciate your help!

Regards,
-Yasi