[jira] [Updated] (AMBARI-15448) Report AMS / Grafana Per Disk Metrics and other cahnges

["Siddharth Wagle (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMBARI-15448?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Siddharth Wagle updated AMBARI-15448:
-------------------------------------
    Summary: Report AMS / Grafana Per Disk Metrics and other cahnges  (was: Report [AMS / Grafana] Per Disk Metrics)

> Report AMS / Grafana Per Disk Metrics and other cahnges
> -------------------------------------------------------
>
>                 Key: AMBARI-15448
>                 URL: https://issues.apache.org/jira/browse/AMBARI-15448
>             Project: Ambari
>          Issue Type: Task
>          Components: ambari-metrics
>    Affects Versions: 2.2.2
>            Reporter: Siddharth Wagle
>            Assignee: Siddharth Wagle
>             Fix For: 2.2.2
>
>
> We need to collect and expose per-disk metrics from AMS for iostats counters.
> We can sort the disk names alphabetically, and name the metrics like _1, _2, etc.
> Plus from psutils:
> busy_time: (Linux, FreeBSD) time spent doing actual I/Os (in milliseconds)
> read_merged_count (Linux): number of merged reads (see iostat doc)
> write_merged_count (Linux): number of merged writes (see iostats doc)
> _Additional fixes_:
> - Combined_disk_total metric seems to be wrong : it is a sum() of all disk percentages from different disks
> - Missing ATS and JHS metrics due to wrong config item in hadoop-metrics2.properties file
> - Report number of disks



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