[AMBARI-18593] Provide ability to use downsampling function on certain metrics like client side topN

• Type: Task
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.5.0
• Fix Version/s: 2.5.0
• Component/s: ambari-metrics
• Assignee: Aravindan Vijayan
• Reporter: Aravindan Vijayan
• Created: 13/Oct/16 20:36
• Updated: 20/Oct/16 22:03
• Resolved: 20/Oct/16 22:03

Description

HDFS exposes top user activity broken down by operations in jmx (nntop).
These metrics should be captured in AMS and exposed in Grafana's HDFS dashboards.

Downsampling should likely be a function like MIN, MAX, AVG, SUM of underlying timeseries specified from the client.