[jira] [Updated] (AMBARI-18407) BE: /api/v1/persist/CLUSTER_CURRENT_STATUS takes more than 2s for transferring 307KB response

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

     [ https://issues.apache.org/jira/browse/AMBARI-18407?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrii Tkach updated AMBARI-18407:
----------------------------------
    Attachment: AMBARI-18047.patch

> BE: /api/v1/persist/CLUSTER_CURRENT_STATUS takes more than 2s for transferring 307KB response
> ---------------------------------------------------------------------------------------------
>
>                 Key: AMBARI-18407
>                 URL: https://issues.apache.org/jira/browse/AMBARI-18407
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-web
>    Affects Versions: 2.1.0
>            Reporter: Andrii Tkach
>            Assignee: Andrii Tkach
>            Priority: Critical
>             Fix For: 3.0.0
>
>         Attachments: AMBARI-18047.patch
>
>
> Ambari UI when logging-in requests the persisted cluster status from the /api/v1/persist/CLUSTER_CURRENT_STATUS call. On a 800 node cluster this takes 2s or more to GET.
> The majority of time is in the transfer of bytes. 
> A 3.8s call had a wait time (time to first byte) of 815ms, and content download time of 2.98s.
> We need to see if the download time can be improved.



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