[HBASE-15222] Use less contended classes for metrics

• Type: Improvement
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.2.0, 1.3.0, 2.0.0
• Fix Version/s: 1.3.0, 2.0.0
• Component/s: metrics
• Hadoop Flags: Reviewed
• Assignee: Elliott Neil Clark
• Reporter: Elliott Neil Clark
• Created: 05/Feb/16 21:26
• Updated: 05/Aug/20 16:29
• Resolved: 24/Feb/16 22:47

Description

Running the benchmarks now, but it looks like the results are pretty extreme. The locking in our histograms is pretty extreme.

Issue Links

• requires: HBASE-12133 Add FastLongHistogram for metric computation