[AMBARI-21658] Check for config group host mapping left behind after host delete

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 2.5.2
• Component/s: ambari-server
• Assignee: Siddharth Wagle
• Reporter: Siddharth Wagle
• Created: 04/Aug/17 03:48
• Updated: 17/Sep/17 04:49
• Resolved: 04/Aug/17 04:25

Description

Delete hosts deletes the config group host mapping as well, however, certain older versions of Ambari have reported seeing orphaned mappings in the configgrouphostmapping table.

This results in Add Service wizard being stuck with the following error message:

This is a JS issue. No exceptions/error in Ambari server logs: 
Uncaught TypeError: Cannot read property 'id' of undefined 
at http://192.167.42.111:8080/javascripts/app.js:37021:96 
at Array.map (native) 
at Class.<anonymous> 

The patch addresses identifying such an error on server start and providing a way to fix it automatically.

Issue Links

• links to: Review board