0006473: dependency_check_interval doesn't work on classes in classes/ directory

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Category

Severity

Reproducibility

Date Submitted

Last Update

0006473

[Resin]

minor

always

07-29-22 11:01

07-29-22 11:33

Reporter

nam

View Status

public

Assigned To

nam

Priority

high

Resolution

won't fix

Status

closed

Product Version

4.0.66

Summary

0006473: dependency_check_interval doesn't work on classes in classes/ directory

Description

Even with dependency_check_interval disabled with:

    dependency_check_interval : -1

Resin is still checking for changes in class files in WEB-INF/classes. When one of those class files is modified, Resin will restart the webapp.

Steps to reproduce:

1. create file webapps/ROOT/index.jsp:

<%@ page session="false" import="test.*" %>
<%
    MyClass.foo();
%>

2. create class webapps/WEB-INF/classes/test/MyClass.java:

package test;
public class MyClass {
  public static void foo() {
    System.out.println("MyClass.foo()");
  }
}

4. start Resin

5. load http://localhost:8080/index.jsp [^] in browser

6. stop Resin

7. disable dependency_check_interval in resin.properties:

  dependency_check_interval : -1

8. start Resin

9. edit webapps/WEB-INF/classes/test/MyClass.class

10. load http://localhost:8080/index.jsp [^] in browser

11. notice that Resin restarts because MyClass.class was modified

Additional Information

Attached Files

Relationships

Notes
(0007094) nam 07-29-22 11:33	Unfortunately we will not fix this issue because: 1. the fix may cause issues with other users 2. a class may be garbage collected and reloaded by the JVM. So if the reloaded class was incompatible with the old one, then the webapp would crash. In this case, it is safer for Resin to restart the webapp. However, there is a workaround by deploying the webapp as a WAR file.

Issue History
Date Modified	Username	Field	Change
07-29-22 11:01	nam	New Issue
07-29-22 11:05	nam	Description Updated
07-29-22 11:07	nam	Description Updated
07-29-22 11:33	nam	Status	new => assigned
07-29-22 11:33	nam	Assigned To	=> nam
07-29-22 11:33	nam	Status	assigned => closed
07-29-22 11:33	nam	Note Added: 0007094
07-29-22 11:33	nam	Resolution	open => won't fix

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