[HDFS-4425] NameNode low on available disk space

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Cannot Reproduce
• Affects Version/s: 2.0.0-alpha
• Component/s: namenode
• Assignee: Unassigned
• Reporter: project
• Created: 22/Jan/13 16:25
• Updated: 24/Jan/13 05:36
• Resolved: 24/Jan/13 04:30

Description

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.