[YARN-5855] DELETE call sometimes returns success when app is not deleted

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Assignee: Gour Saha
• Reporter: Billie Rinaldi
• Created: 08/Nov/16 17:34
• Updated: 29/Aug/17 21:43
• Resolved: 29/Aug/17 21:36

Description

Looking into this issue with gsaha, we noticed that multiple things can contribute to an app continuing to run after a DELETE call, which consists of a stop and a destroy operation. One problem is that the stop call is asynchronous unless a force flag is set. Without the force flag, a message is sent to the AM and success is returned, and with the flag yarnClient.killRunningApplication is called. (There is also an option to wait for a fixed amount of time for the app to stop before returning, but DELETE is not setting this option and force is preferable in this case.) The other issue is that the destroy operation is attempted in a loop, but if the number of retries is exceeded the call returns a 204 response.

Issue Links

• depends upon: YARN-2261 YARN should have a way to run post-application cleanup
• relates to: YARN-7125 Revisit deleteService call once YARN is able to do post clean up for an app