[AMBARI-8973] Add precision option support to Ambari Metrics API

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Epic Link: Ambari Metrics System
• Assignee: Dmytro Sen
• Reporter: Dmytro Sen
• Created: 02/Jan/15 15:35
• Updated: 19/Jan/15 18:22
• Resolved: 19/Jan/15 16:25

Description

Modify AMS API layer to switch precision level based on query window.
E.g.: Any query > 1 hour should get data from the 5 minute aggregate table unless user provides a precision parameter.
-startTime - endTime = 1 day OR precision = minutes
implies query => 5 minute table
-startTime - endTime = 3 hours and precision = seconds
implies query => minute table (METRIC_RECORD)
So, effectively we are just using the precision as guidance paramete

Issue Links

• links to: Review Board