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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-15749) Add AMS post processing function to show the metrics 'diff' over time.
Date Tue, 12 Apr 2016 02:37:26 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-15749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15236470#comment-15236470
] 

Hudson commented on AMBARI-15749:
---------------------------------

FAILURE: Integrated in Ambari-trunk-Commit #4635 (See [https://builds.apache.org/job/Ambari-trunk-Commit/4635/])
AMBARI-15749 : Add AMS post processing function to show the metrics (avijayan: [http://git-wip-us.apache.org/repos/asf?p=ambari.git&a=commit&h=45bac47f8980cef1871155b5b3dd201c3055bbcd])
* ambari-metrics/ambari-metrics-timelineservice/src/main/java/org/apache/hadoop/yarn/server/applicationhistoryservice/metrics/timeline/aggregators/Function.java
* ambari-metrics/ambari-metrics-timelineservice/src/test/java/org/apache/hadoop/yarn/server/applicationhistoryservice/metrics/timeline/HBaseTimelineMetricStoreTest.java
* ambari-metrics/ambari-metrics-timelineservice/src/test/java/org/apache/hadoop/yarn/server/applicationhistoryservice/metrics/timeline/FunctionTest.java
* ambari-metrics/ambari-metrics-timelineservice/src/main/java/org/apache/hadoop/yarn/server/applicationhistoryservice/metrics/timeline/HBaseTimelineMetricStore.java


> 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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