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https://issues.apache.org/jira/browse/AMBARI-18185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15425150#comment-15425150
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Hadoop QA commented on AMBARI-18185:
------------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12824211/AMBARI-18185.patch
against trunk revision .
{color:red}-1 patch{color}. Top-level trunk compilation may be broken.
Console output:
https://builds.apache.org/job/Ambari-trunk-test-patch/8444//console
This message is automatically generated.
> Selecting one host when topN is set, throws an error
> ----------------------------------------------------
>
> Key: AMBARI-18185
> URL: https://issues.apache.org/jira/browse/AMBARI-18185
> Project: Ambari
> Issue Type: Bug
> Components: ambari-metrics
> Affects Versions: 2.4.0
> Reporter: Aravindan Vijayan
> Assignee: Aravindan Vijayan
> Priority: Critical
> Fix For: 2.5.0
>
> Attachments: AMBARI-18185.patch
>
>
> topN is available by default on almost all Grafana templatized dashboards.
> When viewing any of these dashboards, if only one "host" or templated option
> is chosen, then AMS returns with an exception (screenshot attached).
> Sample query:
> collectorhost:6188/ws/v1/timeline/metrics?metricNames=cpu_system._avg&hostname=hostname&appId=HOST&startTime=1470925360&endTime=1470946960&topN=20&topNFunction=avg&isBottomN=false
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