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From "Luke Lu (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-6728) Overhaul metrics framework
Date Sat, 21 Aug 2010 01:43:20 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6728?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Luke Lu updated HADOOP-6728:
----------------------------

    Attachment:     (was: metrics2-uml-r2.png)

> Overhaul metrics framework
> --------------------------
>
>                 Key: HADOOP-6728
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6728
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 0.20.2
>            Reporter: Luke Lu
>            Assignee: Luke Lu
>             Fix For: 0.22.0
>
>         Attachments: metrics1-flow.png, metrics2-builder-r2.png, metrics2-builder.png,
metrics2-flow.png, metrics2-mutable-r2.png, metrics2-mutable.png, metrics2-record-r2.png,
metrics2-record.png, metrics2-uml-r2.png, metrics2-uml.png
>
>
> Per discussions with Arun, Chris, Hong and Rajiv, et al, we concluded that the current
metrics framework needs an overhaul to:
> * Allow multiple plugins for different monitoring systems simultaneously (see also: HADOOP-6508).
> * Refresh metrics plugin config without server restart.
> ** Including filtering of metrics per plugin.
> * Support metrics schema for plugins.
> The jira will be resolved when core hadoop components (hdfs, mapreduce) are updated to
use the new framework . Updates to external components that use the existing metrics framework
will be tracked by different issues.

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