[YARN-4761] NMs reconnecting with changed capabilities can lead to wrong cluster resource calculations on fair scheduler

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6.4
• Fix Version/s: 2.8.0, 2.7.3, 2.6.5, 3.0.0-alpha1
• Component/s: fairscheduler
• Assignee: Sangjin Lee
• Reporter: Sangjin Lee
• Created: 04/Mar/16 00:47
• Updated: 02/Feb/18 07:37
• Resolved: 07/Mar/16 06:31

Description

YARN-3802 uncovered an issue with the scheduler where the resource calculation can be incorrect due to async event handling. It was subsequently fixed by YARN-4344, but it was never fixed for the fair scheduler.

Issue Links

• relates to: YARN-4344 NMs reconnecting with changed capabilities can lead to wrong cluster resource calculations
• relates to: YARN-3802 Two RMNodes for the same NodeId are used in RM sometimes after NM is reconnected.