[YARN-10482] Capacity Scheduler seems locked,RM cannot submit any new job,and change active RM manually return to normal

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 3.1.1
• Fix Version/s: 3.1.1
• Component/s: capacity scheduler, capacityscheduler, resourcemanager, RM
• Assignee: Unassigned
• Reporter: jufeng li
• Created: 04/Nov/20 10:46
• Updated: 12/Dec/20 14:37
• Resolved: 12/Dec/20 14:37

Description

Capacity Scheduler seems locked,RM cannot submit any new job, and change active RM manually return to normal。its a serious bug！I check the stack log，and found some info about *ReentrantReadWriteLock。*Can  anyone can solve this issue？I uploaded the stack when RM normally and unnormally。RM  hangs forever until I restart RM or change the active RM manually！！