FAQ
We can write the simple program and you can call this API.

Make sure Hadoop jars presents in your class path.
Just for more clarification, DN will send their stats as parts of hertbeats, So, NN will maintain all the statistics about the diskspace usage for the complete filesystem and etc... This api will give you that stats.

Regards,
Uma

----- Original Message -----
From: Ivan.Novick@emc.com
Date: Monday, October 17, 2011 9:07 pm
Subject: Re: Is there a good way to see how full hdfs is
To: common-user@hadoop.apache.org, mapreduce-user@hadoop.apache.org
Cc: common-dev@hadoop.apache.org
So is there a client program to call this?

Can one write their own simple client to call this method from all
diskson the cluster?

How about a map reduce job to collect from all disks on the cluster?

On 10/15/11 4:51 AM, "Uma Maheswara Rao G 72686"
wrote:
/** Return the disk usage of the filesystem, including total
capacity,> * used space, and remaining space */
public DiskStatus getDiskStatus() throws IOException {
return dfs.getDiskStatus();
}

DistributedFileSystem has the above API from java API side.

Regards,
Uma

----- Original Message -----
From: wd <wd@wdicc.com>
Date: Saturday, October 15, 2011 4:16 pm
Subject: Re: Is there a good way to see how full hdfs is
To: mapreduce-user@hadoop.apache.org
hadoop dfsadmin -report

On Sat, Oct 15, 2011 at 8:16 AM, Steve Lewis
wrote:
We have a small cluster with HDFS running on only 8 nodes - I
believe that
the partition assigned to hdfs might be getting full and
wonder if the web tools or java api havew a way to look at free space on
hdfs

--
Steven M. Lewis PhD
4221 105th Ave NE
Kirkland, WA 98033
206-384-1340 (cell)
Skype lordjoe_com

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