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https://issues.apache.org/jira/browse/AMBARI-14007?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aravindan Vijayan updated AMBARI-14007:
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    Attachment:     (was: AMBARI-14007.patch)

> Fix precision issues in AMS.
> ----------------------------
>
>                 Key: AMBARI-14007
>                 URL: https://issues.apache.org/jira/browse/AMBARI-14007
>             Project: Ambari
>          Issue Type: Bug
>    Affects Versions: 2.1.2
>            Reporter: Aravindan Vijayan
>            Assignee: Aravindan Vijayan
>            Priority: Critical
>             Fix For: 2.1.3
>
>         Attachments: AMBARI-14007.patch
>
>
> Problem
> The following error is seen in the ambari server log when different time 
> periods are selected in the Host page.
> 19 Nov 2015 22:27:50,476 ERROR [qtp-client-79] MetricsRequestHelper:96 - 
> Error getting timeline metrics : 
> {"exception":"BadRequestException","message":"java.lang.Exception: Requested 
> precision (SECONDS) for given time range causes result set size of 15840, 
> which exceeds the limit - 11520. Please request higher 
> precision.","javaClassName":"org.apache.hadoop.yarn.webapp.BadRequestException"}
> Bug
> The default metric service result limit of 11520 was not able to satisfy a 
> couple of specific cases of 22 host metrics requested for 2 hours in SECONDS 
> precision.
> Fix
> Change default limit to15840. Covers all time periods of all metric charts in 
> Ambari web. Introduce a simple 1 time retry mechanism in Ambari server 
> according to which the server retries AMS with the same request with higher 
> precision if a request fails due to PrecisionLimitExceededException.



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