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From "Andrii Tkach (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-11064) Widgets: Graph change API calls to use null padding rather than zero padding (graphs are misleading for recent data points as they are shown as zero when there's no data)
Date Tue, 12 May 2015 13:59:59 GMT
Andrii Tkach created AMBARI-11064:
-------------------------------------

             Summary: Widgets: Graph change API calls to use null padding rather than zero
padding (graphs are misleading for recent data points as they are shown as zero when there's
no data)
                 Key: AMBARI-11064
                 URL: https://issues.apache.org/jira/browse/AMBARI-11064
             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


Ambari Metrics API have recently changed to automatically pad missing data with zeros.
However, this creates strange user experience where more recent data, if the metrics collection
is somehow lagging, to drop off to zero. This is misleading.
We should convert the API calls to use null padding and make sure to not show any data in
case of null (rather than zero).



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