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Posted to issues@ambari.apache.org by "David F. Quiroga (JIRA)" <ji...@apache.org> on 2018/06/15 21:36:00 UTC

[jira] [Created] (AMBARI-24123) Grafana System-Servers Dashboard Disk IO/IOPS shows negative values

David F. Quiroga created AMBARI-24123:
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             Summary: Grafana System-Servers Dashboard Disk IO/IOPS shows negative values
                 Key: AMBARI-24123
                 URL: https://issues.apache.org/jira/browse/AMBARI-24123
             Project: Ambari
          Issue Type: Bug
          Components: ambari-metrics
    Affects Versions: 2.6.2
         Environment: HDP 2.6.4.0-91

Ambari 2.6.2.0

SLES 12

 

Side note we did not observe this in HDP 2.5.3, Ambari 2.5.2
            Reporter: David F. Quiroga
         Attachments: disk_stat_2hr.jpg, disk_stat_6hr.jpg

Grafana > System-Servers Dashboard 

Charts > Disk IO - Read Bytes, Write Bytes, Disk IOPS - Read Count, Write Count

All display negative values for one or more hosts when viewed over a large time period (6+ hrs)

Attached screenshots are for single host. 6hr shows negative values, but when "zoom-in" on same time period (2hr) there are no negative values. 

Therefore suspects it relates to aggregation of metrics rather than collection itself. 

 

 

 



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