[UIMA-4938] DUCC Job Driver (JD) erroneously determines: fewer work items available than expected

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.1.0-Ducc
• Component/s: DUCC
• Assignee: Lou DeGenaro
• Reporter: Lou DeGenaro
• Created: 20/May/16 18:43
• Updated: 20/May/16 21:02
• Resolved: 20/May/16 21:02

Description

Seemingly a rare event: all work items were successful yet ducc.log contents:

2016.05.18 10:23:18 Wed Received
2016.05.18 10:23:18 Wed WaitingForDriver
2016.05.18 10:23:32 Wed WaitingForServices
2016.05.18 10:23:39 Wed WaitingForResources
2016.05.18 10:24:29 Wed Assigned
2016.05.18 10:24:34 Wed Initializing
2016.05.18 10:25:06 Wed Running
2016.05.18 10:27:49 Wed Completing
2016.05.18 10:28:55 Wed Completed
2016.05.18 10:28:55 Wed completion type: CanceledByDriver
2016.05.18 10:28:55 Wed rationale: fewer work items available than expected

JobDriver ActionGet needs synchronization to prevent overlapping JP requests from processing partially updated information and thereby arriving at an incorrect conclusion.