To add onto Rohit's great response on HDFS interaction, and to clear your confusion here, HDFS does not exactly make itself available as a physical filesystem like say ext3/4 mount points. The usual way of interacting with them is by communicating with the services you run, via RPC calls (over a network).
That said, you can still use the FUSE-DFS connector from HDFS, to "mount" HDFS as a local file system, and run most of your regular *nix programs (ls, cat, etc.) on its files after it has been mounted. To mount HDFS via fuse-dfs drivers, follow http://wiki.apache.org/hadoop/MountableHDFS On Sat, Feb 18, 2012 at 2:06 AM, Rohit <ro...@hortonworks.com> wrote: > Hi Sujit, > > I'd recommend you look at this tutorial on interacting with HDFS: > http://developer.yahoo.com/hadoop/tutorial/module2.html#interacting > > When you create a folder '/foodir' in HDFS, that folder will be in the top > level of HDFS. If you were to create a directory 'foodir' (without the '/'), > that directory would go into your user's folder on HDFS - > '/user/<username>/foodir. > > You can view HDFS directory listings via: > ~bin/hadoop dfs -lsr / > > > Rohit Bakhshi > > > > www.hortonworks.com (http://www.hortonworks.com/) > > > > > > On Friday, February 17, 2012 at 12:18 PM, Sujit Dhamale wrote: > >> Hi,i am new to Hadoop >> >> i install Hadoop cluster on my Ubuntu >> >> using Below command i created one folder "*foodir*" >> *~bin/hadoop dfs -mkdir /foodir* >> >> in my file system , what will be location of folder "*foodir*" ?? > -- Harsh J Customer Ops. Engineer Cloudera | http://tiny.cloudera.com/about
