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https://issues.apache.org/jira/browse/HDFS-363?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved HDFS-363.
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    Resolution: Duplicate

Closing as a dupe, then.

> list of dead nodes with time information
> ----------------------------------------
>
>                 Key: HDFS-363
>                 URL: https://issues.apache.org/jira/browse/HDFS-363
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Christian Kunz
>
> One of our namenodes ended up with 5% of dead datanodes.
> It occurred to us that it would be good to know when individual datanodes 
> became dead. If the list of dead datanodes on the GUI of the namenode 
> included a sortable column of the  'going-dead' times then it would be easier 
> to see whether there is potential danger of having lost some blocks.



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