[YARN-336] Fair scheduler FIFO scheduling within a queue only allows 1 app at a time

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.2-alpha
• Fix Version/s: 2.0.3-alpha
• Component/s: scheduler
• Target Version/s: 2.0.3-alpha
• Assignee: Sandy Ryza
• Reporter: Sandy Ryza
• Created: 11/Jan/13 20:14
• Updated: 15/Feb/13 13:12
• Resolved: 15/Jan/13 17:39

Description

The fair scheduler allows apps to be scheduled in FIFO fashion within a queue. Currently, when this setting is turned on, the scheduler only allows one app to run at a time. While apps submitted earlier should get first priority for allocations, when there is space remaining, other apps should have a change to get at them.