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https://issues.apache.org/jira/browse/AMBARI-15801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmytro Sen updated AMBARI-15801:
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Attachment: AMBARI-15801-trunk_2.patch
> HDFS script alerts moved to UNKNOWN status with "Unable to calculate the
> standard deviation for 1 datapoints"
> -------------------------------------------------------------------------------------------------------------
>
> Key: AMBARI-15801
> URL: https://issues.apache.org/jira/browse/AMBARI-15801
> Project: Ambari
> Issue Type: Bug
> Components: alerts, ambari-metrics
> Affects Versions: 2.2.2
> Reporter: Dmytro Sen
> Assignee: Dmytro Sen
> Priority: Critical
> Fix For: 2.2.2
>
> Attachments: AMBARI-15801-trunk_2.patch
>
>
> HDFS Script alerts turned to UNKNOWN status when minimumValue threshold are
> set to very low values, with an error response "Unable to calculate the
> standard deviation for 1 datapoints"/"Unable to calculate the standard
> deviation for 0 datapoints"
> Note : This behavior is not observed when the minimumValue is set to a higher
> value (e.g 30.0).
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