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Posted to mapreduce-issues@hadoop.apache.org by "Tsuyoshi OZAWA (JIRA)" <ji...@apache.org> on 2013/05/09 03:54:13 UTC

[jira] [Updated] (MAPREDUCE-5227) JobTrackerMetricsInst should standardize naming rules

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5227?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsuyoshi OZAWA updated MAPREDUCE-5227:
--------------------------------------

    Priority: Minor  (was: Major)
    
> JobTrackerMetricsInst should standardize naming rules
> -----------------------------------------------------
>
>                 Key: MAPREDUCE-5227
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5227
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: mrv1
>    Affects Versions: 1.1.2
>            Reporter: Tsuyoshi OZAWA
>            Assignee: Masahiro Nakagawa
>            Priority: Minor
>
> JobTrackerMetricsInst provides users with some metrics, but its naming rules( "jobs_running", "running_maps", "running_reduces") sometimes confuses users. It should be standardized.
> One concern is backward compatibility, so one idea is to share MetricMutableGaugeInt object from old and new property name.
> e.g. to share runningMaps from "running_maps" and "maps_running".

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