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https://issues.apache.org/jira/browse/HDFS-218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12854730#action_12854730
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Ravi Phulari commented on HDFS-218:
-----------------------------------
Apparently auto activating safemode is bad idea because it will stop any Name
node activities and halt all job submissions.
At best we can warn administrator about low disk space, or administrators can
use tools to monitor disk usage.
> name node should provide status of dfs.name.dir's
> -------------------------------------------------
>
> Key: HDFS-218
> URL: https://issues.apache.org/jira/browse/HDFS-218
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Allen Wittenauer
> Assignee: Ravi Phulari
> Attachments: HDFS-218.patch
>
>
> We've had several reports of people letting their dfs.name.dir fill up. To
> help prevent this, the name node web ui and perhaps dfsadmin -report or
> another command should give a disk space report of all dfs.name.dir's as well
> as whether or not the contents of that dir are actually being used, if the
> copy is "good", last 2ndary name node update, and any thing else that might
> be useful.
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