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