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From "Nate Cole (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-3677) Service state should accurately reflect state of host-components
Date Tue, 05 Nov 2013 22:26:20 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-3677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13814332#comment-13814332
] 

Nate Cole commented on AMBARI-3677:
-----------------------------------

Just one comment: Checking {{componentInfo.getCategory().equals("MASTER")}}  check can change
to {{componentInfo.isMaster()}} in case being a master is different in the future.

Other than that, +1

> Service state should accurately reflect state of host-components
> ----------------------------------------------------------------
>
>                 Key: AMBARI-3677
>                 URL: https://issues.apache.org/jira/browse/AMBARI-3677
>             Project: Ambari
>          Issue Type: Task
>            Reporter: Tom Beerbower
>            Assignee: Tom Beerbower
>         Attachments: AMBARI-3677.patch
>
>
> Currently the UI loads *all* the host-components for a service just to calculate the
status of a service. So if YARN, HDFS are installed on a 1000 node cluster, we get 2000 host-components
in response just to calculate the color of 2 services (stopped=red, started=green, starting=blinking-green,
stopping=blinking-red, etc., unknown=yellow)
> This is not scalable on the browser. We want the API to roll-up the host-component statuses,
and correctly update the {{ServiceInfo/state}} of the service. This will help UI in not loading
all host_components.



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