[jira] [Created] (AMBARI-10772) Create widget -> Add metric popup: Aggregator Function dropdown for component metrics

["Andrii Tkach (JIRA)" <ji...@apache.org>]

Andrii Tkach created AMBARI-10772:
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             Summary: Create widget -> Add metric popup: Aggregator Function dropdown for component metrics
                 Key: AMBARI-10772
                 URL: https://issues.apache.org/jira/browse/AMBARI-10772
             Project: Ambari
          Issue Type: Task
          Components: ambari-web
    Affects Versions: 2.1.0
            Reporter: Andrii Tkach
            Assignee: Andrii Tkach
            Priority: Critical
             Fix For: 2.1.0


When user selects any service component like All NameNodes or Datanodes (*and not a specific host component like Active namenode or Active ResourceManager*), Add metric popup should show an additional label *Aggregator Function* at the end and a corresponding bootstrap button/dropdown having following options:
* avg
* sum
* min
* max

By default avg should be selected. Selected value from the dropdown should be shown on the  button. Hovering this dropdown should show a popover with text "This mathematical function will be applied to compute single value for selected metric across all host components".

If user selects any option other than avg, metric path should be suffixed with ._$\{aggregator function name\}. For example if user selects a metric with name *regionserver.RegionServer.numOpenConnections*. It's corresponding metric path as known from API data obtained from metrics descriptor is *metrics/hbase/ipc/IPC/numOpenConnections*. If user then selects an aggregator function *sum*, metric path prepared for the metric element in the metric Array of the widget API definition should be saved as  *metrics/hbase/ipc/IPC/numOpenConnections._sum*. 




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