[JENKINS-756] Perform initialization outside WebAppMain #13813

Hudson spends a lot of time in ServletContextListener during initialization.

Many containers like Tomcat serves blank message during this period, which
confuses the user. Hudson should return from the servlet context listener right
away, then use a separate thread to perform initialization. This would allow
Hudson to produce a meaningful "initializing" message during this process.

Originally reported by kohsuke, imported from: Perform initialization outside WebAppMain

• status: Closed
• priority: Major
• component(s): core
• resolution: Fixed
• resolved: 2007-09-16T16:47:03+00:00
• votes: 0
• watchers: 0
• imported: 2025-11-24

Raw content of original issue

Hudson spends a lot of time in ServletContextListener during initialization.

Many containers like Tomcat serves blank message during this period, which
confuses the user. Hudson should return from the servlet context listener right
away, then use a separate thread to perform initialization. This would allow
Hudson to produce a meaningful "initializing" message during this process.

• environment: Platform: All, OS: All