[UIMA-5334] DUCC Web Server (WS) sometimes incorrectly shows DB down

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.2.1-Ducc
• Component/s: DUCC
• Assignee: Lou DeGenaro
• Reporter: Lou DeGenaro
• Created: 24/Feb/17 20:59
• Updated: 24/Feb/17 21:16
• Resolved: 24/Feb/17 21:16

Description

Presently, WS queries DB for Machines data to determine if DB is alive. However when Resource Manager (RM) is recycled it clears the table and then rebuilds it. WS may get fooled that DB is not functional for a short period of time when in fact it is functional.

WS should query DB ckpt table, since it will always respond with data, to determine aliveness.