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https://issues.apache.org/jira/browse/AMBARI-16432?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Oleg Nechiporenko reopened AMBARI-16432:
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> Give user visual feedback while we do background request and next button is
> disabled
> ------------------------------------------------------------------------------------
>
> Key: AMBARI-16432
> URL: https://issues.apache.org/jira/browse/AMBARI-16432
> Project: Ambari
> Issue Type: Task
> Components: ambari-web
> Affects Versions: 2.4.0
> Reporter: Oleg Nechiporenko
> Assignee: Oleg Nechiporenko
> Priority: Critical
> Fix For: 2.4.0
>
> Attachments: AMBARI-16432.patch
>
>
> User may think that he is blocked or did something wrong, on one of wizard
> (any wiz) steps because Next button can be disabled (on significant time),
> especially on big clusters or in case of slow connection speed, or bad ping.
> We have many places where we disable "Next" button while we do some
> background operations/calculations. Usually this are requests on
> validations/recommendations. Sometimes this can take a significant time
> frame, before we will enable Next button. At the same time user is not aware
> why Next button is disabled and he cannot proceed to next step. We should
> give user a visual feedback that we are doing some calculations and that's
> why Next button is disabled. The easiest way is, to switch Next button on
> spinner while we do our background stuff.
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