[jira] [Commented] (AMBARI-12212) When visiting Hosts page, UI makes two duplicated calls (performance issue)

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

    [ https://issues.apache.org/jira/browse/AMBARI-12212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14608097#comment-14608097 ] 

Andrii Tkach commented on AMBARI-12212:
---------------------------------------

  6654 tests complete (12 seconds)
  86 tests pending

> When visiting Hosts page, UI makes two duplicated calls (performance issue)
> ---------------------------------------------------------------------------
>
>                 Key: AMBARI-12212
>                 URL: https://issues.apache.org/jira/browse/AMBARI-12212
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-web
>    Affects Versions: 2.1.0
>            Reporter: Andrii Tkach
>            Assignee: Andrii Tkach
>            Priority: Critical
>             Fix For: 2.1.0
>
>         Attachments: AMBARI-12212.patch, Screen Shot 2015-06-29 at 9.10.18 PM.png
>
>
> UI is making duplicated calls when the user lands on Hosts page (same exact query parameters and form data).
> One of these calls is very expensive (BE takes a while to come back - on a 400-node cluster it took 10 seconds).
> See attached.
> We need to remove this redundant calls because this is an area where perf degradation is most pronounced and visible.



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