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From "Aravindan Vijayan (JIRA)" <>
Subject [jira] [Created] (AMBARI-20773) AMS: Schema changes for nextGen feature support
Date Mon, 17 Apr 2017 17:53:41 GMT
Aravindan Vijayan created AMBARI-20773:

             Summary: AMS: Schema changes for nextGen feature support
                 Key: AMBARI-20773
             Project: Ambari
          Issue Type: Epic
          Components: ambari-metrics
    Affects Versions: 3.0.0
            Reporter: Aravindan Vijayan
            Assignee: Aravindan Vijayan
            Priority: Critical
             Fix For: 3.0.0

Presently, AMS stores (metricName, hostname, serverTime, appId, instanceId) for every row.
Although this makes SQL query easy to write, it adds duplication when storing it in the Regions

This epic is used to track the investigation and implementation of a unique integer ID for
an application-instance metric on a host and use that as a lookup table with a write through
cache when inserting or reading data in the METRIC_RECORD table.

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