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From "Dmytro Sen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-15801) HDFS script alerts moved to UNKNOWN status with "Unable to calculate the standard deviation for 1 datapoints"
Date Mon, 11 Apr 2016 11:58:25 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-15801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15234941#comment-15234941
] 

Dmytro Sen commented on AMBARI-15801:
-------------------------------------

Unit tests passed locally
{code}
----------------------------------------------------------------------
Ran 277 tests in 9.376s

OK
----------------------------------------------------------------------
Total run:956
Total errors:0
Total failures:0
OK
{code}

> 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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