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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-5051) hdfs throughput calculation is incorrect in chukwa database
Date Tue, 10 Feb 2009 01:04:59 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-5051?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chris Douglas updated HADOOP-5051:
----------------------------------

    Component/s: contrib/chukwa

> hdfs throughput calculation is incorrect in chukwa database
> -----------------------------------------------------------
>
>                 Key: HADOOP-5051
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5051
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/chukwa
>         Environment: Redhat 5.1, Java 6
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>         Attachments: HADOOP-5051-1.patch
>
>
> The SQL statement to calculate hdfs throughput is incorrect.  The correct algorithm is
to calculate metrics rate for individual datanode then sum up of all datanode's rate to get
the total throughput for the cluster.

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