[YARN-8925] Updating distributed node attributes only when necessary

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.1
• Fix Version/s: 3.3.0, 3.2.1
• Component/s: resourcemanager
• Labels: performance
• Hadoop Flags: Reviewed
• Assignee: Tao Yang
• Reporter: Tao Yang
• Created: 22/Oct/18 06:55
• Updated: 20/Mar/19 16:59
• Resolved: 21/Dec/18 08:37

Description

Currently if distributed node attributes exist, even though there is no change, updating for distributed node attributes will happen in every heartbeat between NM and RM. Updating process will hold NodeAttributesManagerImpl#writeLock and may have some influence in a large cluster. We have found nodes UI of a large cluster is opened slowly and most time it's waiting for the lock in NodeAttributesManagerImpl. I think this updating should be called only when necessary to enhance the performance of related process.

Issue Links

• duplicates: YARN-7877 Node attributes error handling based on RM validation response