Re: Getting free space percentage on DFS

[Arvind Sharma]

You can try something like this:


if (_FileSystem instanceof DistributedFileSystem)
        {
            DistributedFileSystem dfs = (DistributedFileSystem) _FileSystems;
            DiskStatus ds = dfs.getDiskStatus();
            long capacity = ds.getCapacity();
            long used = ds.getDfsUsed();
            long remaining = ds.getRemaining();
            long presentCapacity = used + remaining;

            hdfsPercentDiskUsed = Math.round((((1.0 * used) / presentCapacity) 
* 100));
        }



Arvind



________________________________
From: Stas Oskin <stas.os...@gmail.com>
To: core-u...@hadoop.apache.org
Sent: Sunday, August 23, 2009 4:22:26 AM
Subject: Getting free space percentage on DFS

Hi.

How can I get the free / used space on DFS, via Java?

What are the functions that can be used for that?

Note, I'm using a regular (non-super) user, so I need to do it in a similar
way to dfshealth.jsp, which AFAIK doesn't require any permissions.

Thanks in advance.