[UIMA-4313] DUCC Job Driver (JD) sometimes fails to cancel timers for Ack/End

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0-Ducc
• Fix Version/s: 2.0.0-Ducc
• Component/s: DUCC
• Assignee: Lou DeGenaro
• Reporter: Lou DeGenaro
• Created: 29/Mar/15 13:49
• Updated: 29/May/15 21:03
• Resolved: 29/Mar/15 14:01

Description

When a work item ends due to normal completion or exception, the JD proceeds to cancel the corresponding Ack/End timer. Unfortunately if a JP is preempted or autonomously ends the timer is not reclaimed (hence, the bug). When the number of these non-reclaim events gets large, the potential exists for JD to go OOM.