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Re: NameNode low on available disk space
Hi again,

Yes, you need to add it to hdfs-site.xml and restart the NN.

> Thanks Harsh, Do I need to add parameters in hdfs-site.xml and restart
service namenode.
> +  public static final String  DFS_NAMENODE_DU_RESERVED_KEY "dfs.namenode.resource.du.
reserved";
> +  public static final long    DFS_NAMENODE_DU_RESERVED_DEFAULT = 1024 *
1024 * 100; // 100 MB
On Wed, Jan 23, 2013 at 10:12 AM, Harsh J <[EMAIL PROTECTED]> wrote:

> Edit your hdfs-site.xml (or whatever place of config your NN uses) to
> lower the value of property "dfs.namenode.resource.du.reserved". Create a
> new property if one does not exist, and set the value of space to a
> suitable level. The default itself is pretty low - 100 MB in bytes.
>
>
> On Wed, Jan 23, 2013 at 9:13 AM, Mohit Vadhera <
> [EMAIL PROTECTED]> wrote:
>
>> Ok Steve. I am forwarding my issue again to the list that you said. The
>> version is
>>
>> 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.Hadoop 2.0.0-cdh4.1.2
>>
>> 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.
>>
>>
>>
>> On Wed, Jan 23, 2013 at 2:50 AM, Steve Loughran <[EMAIL PROTECTED]
>> > wrote:
>>
>>> [EMAIL PROTECTED]ist
>>
>>
>>
>>
>
>
> --
> Harsh J
>

--
Harsh J