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https://issues.apache.org/jira/browse/AMBARI-15749?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aravindan Vijayan updated AMBARI-15749:
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Status: Patch Available (was: Open)
> Add AMS post processing function to show the metrics 'diff' over time.
> ----------------------------------------------------------------------
>
> Key: AMBARI-15749
> URL: https://issues.apache.org/jira/browse/AMBARI-15749
> Project: Ambari
> Issue Type: Task
> Affects Versions: 2.2.2
> Reporter: Aravindan Vijayan
> Assignee: Aravindan Vijayan
> Priority: Critical
> Fix For: 2.4.0
>
> Attachments: AMBARI-15749.patch
>
>
> The use case is that, e.g. user wants to know how frequently the containers
> are allocated over time. Currently, the num of allocated containers is an
> aggregated value, so it's always a monotonically increasing line chart.
> To show how frequently the containers are allocated, currently we do have a
> 'rate' option on the UI. But the way that is calculated is ( NumContainers@T2
> - NumContainers@T1) / (T2 - T1)(in seconds). This results in decimal values
> on the UI.
> Here, the use case is to just show the num 'diff' here, instead of dividing
> it by time interval.
> With this change, I can change the Grafana UI to use bar chart.
> Each bar represents the number of containers allocated between the the time
> interval (time interval here is the width of the bar)
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