Dmytro Sen created AMBARI-15801:
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Summary: 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
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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