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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-4425) NameNode low on available disk space
Date Wed, 23 Jan 2013 04:46:14 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4425?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Harsh J resolved HDFS-4425.
---------------------------

    Resolution: Invalid

The Apache JIRA is not for user help but only for confirmed bug reports. Please send usage
help requests such as your questions to user@hadoop.apache.org.

I'm resolving this as Invalid; lets carry forward on your email instead. Many have already
answered you there. The key to tweak the default is dfs.namenode.resource.du.reserved.
                
> NameNode low on available disk space
> ------------------------------------
>
>                 Key: HDFS-4425
>                 URL: https://issues.apache.org/jira/browse/HDFS-4425
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.0.0-alpha
>            Reporter: project
>            Priority: Critical
>
> Hi,
> Namenode switches into safemode when it has low disk space on the root fs / i have to
manually run a command to leave it. Below are log messages for low space on root / fs. Is
there any parameter so that i can reduce reserved amount.
> 2013-01-21 01:22:52,217 WARN org.apache.hadoop.hdfs.server.namenode.NameNodeResourceChecker:
Space available on volume '/dev/mapper/vg_lv_root' is 10653696, which is below the configured
reserved amount 104857600
> 2013-01-21 01:22:52,218 WARN org.apache.hadoop.hdfs.server.namenode.FSNamesystem: NameNode
low on available disk space. Entering safe mode.
> 2013-01-21 01:22:52,218 INFO org.apache.hadoop.hdfs.StateChange: STATE* Safe mode is
ON.

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