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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HADOOP-3500) decommission node is both in the "Live Datanodes" with "In Service" status, and in the "Dead Datanodes" of the dfs namenode web ui.
Date Thu, 05 Jun 2008 16:23:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3500?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Owen O'Malley resolved HADOOP-3500.
-----------------------------------

    Resolution: Duplicate

I suspect the browser hiccuped and you got two instances of the same bug. (HADOOP-3499)

> decommission node is both in the "Live Datanodes" with "In Service" status, and in the
"Dead Datanodes" of the dfs namenode web ui.
> -----------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-3500
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3500
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.17.0
>         Environment: linux-2.6.9
>            Reporter: lixiangna
>   Original Estimate: 72h
>  Remaining Estimate: 72h
>
> try to decommission a node by the following the steps:
> (1) write the hostname of node which will be decommissioned in a file (the exclude file)
> (2) specified the absolute path of the exclude file as a configuration parameter dfs.hosts.exclude.
> (3) run "bin/hadoop dfsadmin -refreshNodes".
> It is surprising that the node is found both in the "Live Datanodes" with "In Service"
status, and in the "Dead Datanodes" of the dfs namenode web ui. When copy new data to the
HDFS, its Used size is increasing as other un-decommissioned nodes. Obviously it is in service.
Restarting the HDFS or waiting a long time(two day) havn't make the decommission yet.
> the more strange thing, If nodes are configured as the include nodes by similar steps,
then these include nodes and
> the exclude node are all only in the "Dead Datanodes" lists. 
> I did many times tests in both 0.17.0 and 0.15.1. The results is same. So i think there
maybe bugs.

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