title: How to put the reduce partitions into designed machines in hadoop cluster?
body: <p>For example:</p>
  
  <p>reduce results: <code>part-00000</code>, <code>part-00001</code> ... <code>part-00008</code>,
  the cluster has 3 datanodes and I want to</p>
  
  <ul>
  <li>put the <code>part-00000</code>, <code>part-00001</code> and <code>part-00002</code> to the <code>slave0</code></li>
  <li>put the <code>part-00003</code>, <code>part-00004</code> and <code>part-00005</code> to the <code>slave1</code></li>
  <li>put the <code>part-00006</code>, <code>part-00007</code> and <code>part-00008</code> to the <code>slave2</code></li>
  </ul>
  
  <p>How can I do that?</p>