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https://issues.apache.org/jira/browse/AMBARI-13008?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14730647#comment-14730647
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Andrii Babiichuk commented on AMBARI-13008:
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+1 for the patch
> UI does not tolerate ATS being absent
> -------------------------------------
>
> Key: AMBARI-13008
> URL: https://issues.apache.org/jira/browse/AMBARI-13008
> Project: Ambari
> Issue Type: Bug
> Components: ambari-web
> Affects Versions: 2.1.0
> Reporter: Andrii Tkach
> Assignee: Andrii Tkach
> Fix For: 2.1.2
>
> Attachments: AMBARI-13008.patch
>
>
> The UI was halting page loads with:
> {noformat}
> Case Comment: Uncaught TypeError: Cannot read property 'HostRoles' of
> undefined(anonymous function) @ app.js:56797
> App.serviceMetricsMapper.App.QuickDataMapper.create.yarnMapper @ app.js:56772
> App.serviceMetricsMapper.App.QuickDataMapper.create.mapExtendedModel @
> app.js:56559(anonymous function) @ app.js:56520
> App.serviceMetricsMapper.App.QuickDataMapper.create.map @ app.js:56512newFunc
> @ vendor.js:2627(anonymous function) @ app.js:161511
> {noformat}
> The UI should tolerate or somehow warn when ATS is not installed.
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