[AMBARI-21917] Some services had issue coming up after express upgrade on IOP clusters

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.5.2
• Fix Version/s: 2.6.0
• Component/s: ambari-server
• Assignee: Siddharth Wagle
• Reporter: Siddharth Wagle
• Created: 08/Sep/17 21:12
• Updated: 20/Sep/17 19:56
• Resolved: 20/Sep/17 19:56

Description

The RCO cache gets cleared on an upgrade to make sure new RCO is loaded. However, certain test environments have reported seeing incorrect / older RCO still in effect after Finalize and the operations failing due to this.

The server log does indicate RCO getting cleared:

24 Aug 2017 17:15:26,701  INFO [Server Action Executor Worker 1509] StackUpgradeFinishListener:92 - Clearing RCO cache

But the initialization statements are missing. Making a defensive patch to for re-creation of RCO.