[OOZIE-2026] fix synchronization in SLACalculatorMemory.addJobStatus to avoid duplicated SLA message

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.1.0
• Assignee: Ryota Egashira
• Reporter: Ryota Egashira
• Created: 03/Oct/14 21:42
• Updated: 12/Jan/15 06:08
• Resolved: 10/Oct/14 09:44

Description

there is case where job generates start event by SLACalculatorMemory.addJobStatus, but before eventProcessed flag updated on DB side, SLA worker thread picks the action (SLACalculatorMemory.updateJobSla), end up sending duplicated messages. this patch is to fix synchronized block in addJobStatus to prevent this.