[YARN-3691] FairScheduler: Limit number of reservations for a container

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: fairscheduler
• Assignee: Arun Suresh
• Reporter: Arun Suresh
• Created: 20/May/15 17:31
• Updated: 20/May/15 20:09

Description

Currently, It is possible to reserve resource for an app on all nodes. Limiting this to possibly just a number of nodes (or a ratio of the total cluster size) would improve utilization of the cluster and will reduce the possibility of starving other apps.