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From Uma Maheswara Rao G 72686 <mahesw...@huawei.com>
Subject Re: Is there a good way to see how full hdfs is
Date Mon, 17 Oct 2011 16:56:04 GMT
Yes, that was deprecated in trunk

If you want to use by programatically, this will be the better option as well.
 /** {@inheritDoc} */
  @Override
  public FsStatus getStatus(Path p) throws IOException {
    statistics.incrementReadOps(1);
    return dfs.getDiskStatus();
  }

This should work for you.

It will give you FileStatus object contains below APIs
getCapacity, getUsed, getRemaining

I would suggest you to look at the FileSystem APIs available once. I think you will get clear
understanding to use.

Regards,
Uma


----- Original Message -----
From: Ivan.Novick@emc.com
Date: Monday, October 17, 2011 9:48 pm
Subject: Re: Is there a good way to see how full hdfs is
To: common-user@hadoop.apache.org

> Hi Harsh,
> 
> I need access to the data programatically for system automation, 
> and hence
> I do not want a monitoring tool but access to the raw data.
> 
> I am more than happy to use an exposed function or client program 
> and not
> an internal API.
> 
> So i am still a bit confused... What is the simplest way to get at 
> thisraw disk usage data programmatically?  Is there a HDFS 
> equivalent of du
> and df, or are you suggesting to just run that on the linux OS 
> (which is
> perfectly doable).
> 
> Cheers,
> Ivan
> 
> 
> On 10/17/11 9:05 AM, "Harsh J" <harsh@cloudera.com> wrote:
> 
> >Uma/Ivan,
> >
> >The DistributedFileSystem class explicitly is _not_ meant for public
> >consumption, it is an internal one. Additionally, that method has 
> been>deprecated.
> >
> >What you need is FileSystem#getStatus() if you want the summarized
> >report via code.
> >
> >A job, that possibly runs "du" or "df", is a good idea if you
> >guarantee perfect homogeneity of path names in your cluster.
> >
> >But I wonder, why won't using a general monitoring tool (such as
> >nagios) for this purpose cut it? What's the end goal here?
> >
> >P.s. I'd moved this conversation to hdfs-user@ earlier on, but now I
> >see it being cross posted into mr-user, common-user, and common-
> dev --
> >Why?
> >
> >On Mon, Oct 17, 2011 at 9:25 PM, Uma Maheswara Rao G 72686
> ><maheswara@huawei.com> wrote:
> >> 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"
> >>> <maheswara@huawei.com>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
> >>> >> <lordjoe2000@gmail.com> 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
> >>> >> >
> >>> >> >
> >>> >> >
> >>> >>
> >>> >
> >>>
> >>>
> >>
> >
> >
> >
> >-- 
> >Harsh J
> >
> 
> 

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