[YARN-4270] Limit application resource reservation on nodes for non-node/rack specific requests

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: fairscheduler
• Assignee: Arun Suresh
• Reporter: Arun Suresh
• Created: 15/Oct/15 18:46
• Updated: 30/Aug/16 01:15
• Resolved: 20/Oct/15 03:03

Description

I has been noticed that for off-switch requests, the FairScheduler reserves resources on all nodes. This could lead to the entire cluster being unavailable for all other applications.

Ideally, the reservations should be on a configurable number of nodes, default 1.

Issue Links

• is related to: YARN-4477 FairScheduler: Handle condition which can result in an infinite loop in attemptScheduling.
• is related to: YARN-5082 Limit ContainerId increase in fair scheduler if the num of node app reserved reached the limit