-
Type:
Bug
-
Status: Closed
-
Priority:
Blocker
-
Resolution: Fixed
-
Affects Version/s: 2.7.1
-
Fix Version/s: 2.8.0, 2.7.3, 3.0.0-alpha1
-
Component/s: capacityscheduler
-
Labels:None
-
Target Version/s:
-
Hadoop Flags:Reviewed
CapacityScheduler's LeafQueue has "reservations continue looking" logic that allows an application to unreserve elsewhere to fulfil a container request on a node that has available space. However in 2.7 that logic seems to break allocations for subsequent apps in the queue. Once a user hits its user limit, subsequent apps in the queue for other users receive containers at a significantly reduced rate.
- is broken by
-
YARN-3434 Interaction between reservations and userlimit can result in significant ULF violation
-
- Closed
-