title: Can hadoop take input from multiple directories and files
body: <p>As I set the fileinputFormat as hadoop input.
  The <code>arg[0]+"/*/*/*"</code> said match no files.</p>
  
  <p>what I want to is to read from multiple files as:</p>
  
  <pre>
  Directory1
  ---Directory11
     ---Directory111
          --f1.txt
          --f2.txt
  ---Directory12
  Directory2
  ---Directory21
  </pre>
  
  <p>is it possible in Hadoop?
  Thanks!</p>