[YARN-2352] FairScheduler: Collect metrics on duration of critical methods that affect performance

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.1
• Fix Version/s: 2.6.0
• Component/s: scheduler
• Target Version/s: 2.6.0
• Hadoop Flags: Reviewed
• Assignee: Karthik Kambatla
• Reporter: Karthik Kambatla
• Created: 24/Jul/14 18:15
• Updated: 01/Dec/14 03:11
• Resolved: 08/Aug/14 16:28

Description

We need more metrics for better visibility into FairScheduler performance. At the least, we need to do this for (1) handle node events, (2) update, (3) compute fairshares, (4) preemption.