[YARN-3826] Race condition in ResourceTrackerService leads to wrong diagnostics messages

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: resourcemanager
• Target Version/s: 2.8.0
• Hadoop Flags: Reviewed
• Assignee: Chengbing Liu
• Reporter: Chengbing Liu
• Created: 18/Jun/15 10:11
• Updated: 30/Aug/16 01:20
• Resolved: 25/Jun/15 10:47

Description

Since we are calling setDiagnosticsMessage in nodeHeartbeat, which can be called concurrently, the static resync and shutdown may have wrong diagnostics messages in some cases.

On the other side, these static members can hardly save any memory, since the normal heartbeat responses are created for each heartbeat.