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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-4228) dfs datanode metrics, bytes_read, bytes_written overflows due to incorrect type used.
Date Wed, 08 Oct 2008 05:41:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-4228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hairong Kuang updated HADOOP-4228:
----------------------------------

    Status: Patch Available  (was: Open)

Thank Brian for submitting a patch to HADOOP-4137 for handling Long type in Ganglia context.
I am resubmitting my patch to hudson.

> dfs datanode metrics, bytes_read, bytes_written overflows due to incorrect type used.
> -------------------------------------------------------------------------------------
>
>                 Key: HADOOP-4228
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4228
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: metrics
>    Affects Versions: 0.18.2, 0.19.0
>         Environment: Red Hat Enterprise Linux AS release 4 (Nahant Update 5), Java 1.6.
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>            Priority: Blocker
>             Fix For: 0.18.2, 0.19.0
>
>         Attachments: HADOOP-4228-trunk.patch, HADOOP-4228.patch, metricsLong.patch, metricsLong1-br18.patch,
metricsLong1.patch
>
>
> bytes_read, and bytes_written metrics are using int (MetricsTimeVaryingInt) as counter.
 This type is too small to store the bytes_read and bytes_written metrics.  Recommend to change
this to long (metricsLongValue).

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