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Date: Wed, 26 May 2010 18:17:40 -0400 (EDT)
From: "Eli Collins (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Subject: [jira] Updated: (HDFS-1161) Make DN minimum valid volumes
 configurable
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     [ https://issues.apache.org/jira/browse/HDFS-1161?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eli Collins updated HDFS-1161:
------------------------------

    Status: Patch Available  (was: Open)

> Make DN minimum valid volumes configurable
> ------------------------------------------
>
>                 Key: HDFS-1161
>                 URL: https://issues.apache.org/jira/browse/HDFS-1161
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: data-node
>    Affects Versions: 0.21.0, 0.22.0
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>             Fix For: 0.21.0, 0.22.0
>
>         Attachments: hdfs-1161-1.patch, hdfs-1161-2.patch, hdfs-1161-3.patch, hdfs-1161-4.patch, hdfs-1161-5.patch
>
>
> The minimum number of non-faulty volumes to keep the DN active is hard-coded to 1.  It would be useful to allow users to configure this value so the DN can be taken offline when eg half of its disks fail, otherwise it doesn't get reported until it's down to it's final disk and suffering degraded performance.

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