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From "Wang Xu (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-5778) Help information of refreshNodes does not show how to decomission nodes
Date Wed, 06 May 2009 05:30:30 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-5778?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wang Xu updated HADOOP-5778:
----------------------------

    Attachment: refreshNodes.patch

Add the omitted information to dfsAdmin's help messages.

> Help information of refreshNodes does not show how to decomission nodes
> -----------------------------------------------------------------------
>
>                 Key: HADOOP-5778
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5778
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.19.1
>         Environment: hadoop 0.19.1, jdk 1.6, CentOS 5.2
>            Reporter: Wang Xu
>            Assignee: Wang Xu
>             Fix For: 0.19.2
>
>         Attachments: refreshNodes.patch
>
>
> The help information does not indicate how to decommission nodes.
> It only describes two scenarios:
> * to stop nodes if not in dfs.hosts
> * stop decommissioning if node is decommissioning and in both dfs.hosts and dfs.host.exclude
> but omits this one:
> * starting decommissioning if node is in service and  in both dfs.hosts and dfs.host.exclude
> It would better describe as "Each entry defined in dfs.hosts and also
> in dfs.host.exclude is start decommissioning and start block replication
> if it is in service, or is stopped from decommissioning if it has already
> been marked for decommission."

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