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.

there are -I added the specifics to the JIRA you filed on this earlier

these are the kind of issues best discussed on the
[EMAIL PROTECTED]ist, rather than JIRA (they aren't bugs in the
code) or general (which is
more about general hadoop direction, releases &c)

-steve

On 22 January 2013 21:03, Mohit Vadhera <[EMAIL PROTECTED]>wrote:

> 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.
>