[jira] [Updated] (AMBARI-16139) Duplicate Dashboard metrics API calls should not be made in parallel

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

     [ https://issues.apache.org/jira/browse/AMBARI-16139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrii Tkach updated AMBARI-16139:
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    Attachment: Screen Shot 2016-04-26 at 1.37.01 PM.png

> Duplicate Dashboard metrics API calls should not be made in parallel
> --------------------------------------------------------------------
>
>                 Key: AMBARI-16139
>                 URL: https://issues.apache.org/jira/browse/AMBARI-16139
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-web
>    Affects Versions: 2.1.2
>            Reporter: Andrii Tkach
>            Assignee: Andrii Tkach
>            Priority: Critical
>             Fix For: 2.4.0
>
>         Attachments: Screen Shot 2016-04-26 at 1.37.01 PM.png
>
>
> Graphs on Cluster dashboard page keeps making API calls irrespective of the previous APIs call have completed or not. Thus on a cluster where AMS is behaving there are multiple same API calls in pending state and results into ambari-server unresponsive.
> For Graph widgets, ajax calls should be made from the complete callback function of the same ajax call. so until an ajax call is not finished, the same ajax is not triggered again
> we do this in correct way for enhanced service dashboard on service summary page 



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