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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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Steve Loughran resolved HDFS-4425.
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Resolution: Cannot Reproduce
Again, I'm closing this issue
# JIRA is not the place to deal with what is currently believed to be a config
problem affecting a single user.
# Hadoop 2.0.0-cdh4.1.2 is not an ASF release: you need to take it up with
Cloudera via their support channels, both paid and mailing list.
# If it is found to be something in the apache codebase then they can file a
replicable bug here which we can all fix together.
# 'critical' is reserved for issues that are considered risks to data across
multiple clusters. This may be critical for you, but given it works for
everyone else, minor.
Please, please, please don't use JIRAs for these kind of problems -it's like
asking Linus for help getting networking right on your ubuntu laptop.
> 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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