[HADOOP-7703] WebAppContext should also be stopped and cleared

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.24.0
• Fix Version/s: 2.0.2-alpha
• Hadoop Flags: Reviewed
• Release Note: Improved excpetion handling of shutting down web server. (Devaraj K via Eric Yang)
• Assignee: Devaraj Kavali
• Reporter: Devaraj Kavali
• Created: 30/Sep/11 10:50
• Updated: 11/Oct/12 17:45
• Resolved: 05/Oct/11 16:10

Description

1. If listener stop method throws any exception then the webserver stop method will not be called

public void stop() throws Exception {
    listener.close();
    webServer.stop();
}

2. also, WebAppContext stores all the context attributes, which does not get cleared if only webServer is stopped.
so following calls are necessary to ensure clean and complete stop.

webAppContext.clearAttributes();
webAppContext.stop();

3. Also the WebAppContext display name can be the name passed to HttpServer instance.

webAppContext.setDisplayName(name);

instead of

webAppContext.setDisplayName("WepAppsContext");