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From "project (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-4425) NameNode low on available disk space
Date Tue, 22 Jan 2013 16:26:12 GMT
project created HDFS-4425:

             Summary: 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
            Reporter: project


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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