[AURORA-1894] Inline preemption filter in PreemptionVictimFilterImpl

• Type: Task
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: Scheduler
• Labels: newbie
• Epic Link: Scheduler Performance Improvement
• Assignee: Unassigned
• Reporter: Mehrdad Nurolahzade
• Created: 16/Feb/17 21:40
• Updated: 17/Feb/17 16:18

Description

Profiling preemption logic, I can see PreemptionVictimFilterImpl#preemptionFilter() is producing ~200K/sec lambda objects to be used by filterPreemptionVictims():

PreemptionVictimFilterImpl.filterPreemptionVictims()

      FluentIterable<PreemptionVictim> preemptableTasks = FluentIterable.from(possibleVictims)
          .filter(preemptionFilter(pendingTask));

Inline this logic (refactor to loop) to remove the need to create these short-lived lambda objects.