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Aravindan Vijayan commented on AMBARI-18289: -------------------------------------------- [~Ponder-Hoover] psutil has a compile time dependency on gcc and python-devel packages. Can you check if those are installed? > Invalid negative values for some AMS metrics > -------------------------------------------- > > Key: AMBARI-18289 > URL: https://issues.apache.org/jira/browse/AMBARI-18289 > Project: Ambari > Issue Type: Bug > Components: ambari-metrics > Affects Versions: 2.4.0 > Reporter: Aravindan Vijayan > Assignee: Aravindan Vijayan > Priority: Critical > Fix For: 2.5.0 > > Attachments: AMBARI-18289-2.patch > > > PROBLEM > Negative values are being reported for IOPS in the "system servers" dashboard > BUG > This was a dockerized environment. Negative rate values were seen because > read/write counters were dropping below the previous values at random times. > On further investigation, it revealed that this was due to the docker volume > groups present on the host. It is expected of docker containers to add/remove > the volume groups during the lifecyle of a container. So, when a volume group > goes away, the read/write counters do not contribute to the total counter > values, thus making the value go below the last seen value. > FIX > Have a provision to discard such "special" disk partitions through a skip > pattern. Individual disk counter metrics can be used to get disk specific > counter values. If skipped, they will not contribute to the global counter > metric. -- This message was sent by Atlassian JIRA (v6.3.4#6332)