[MAPREDUCE-4986] Document the locality effect of preemption timeouts in FairScheduler when mapred.fairscheduler.preemption is off

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.1.1
• Component/s: contrib/fair-share, documentation
• Assignee: Unassigned
• Reporter: Gera Shegalov
• Created: 07/Feb/13 00:27
• Updated: 07/Feb/13 00:30

Description

fair_scheduler.xml does not mention the delay scheduling algorithm. Furthermore, it does not explain that in getAllowedLocalityLevel the preemption timeouts are used to disable the locality delay scheduling for the starved pool when mapred.fairscheduler.preemption=false (default).