title: Complete list of property that is used in Hadoop framework
body: <p>I'm making some research on the Hadoop framework. I would like to ask about the property that can be used in the framework.. For example</p>
  
  <ul>
  <li>io.sort.mb</li>
  <li>io.sort.record.percent</li>
  <li>etc</li>
  </ul>
  
  <p>Is there any reference that I can can the whole properties list of this framework? Very hopefully that someone can help me.
  <p>Besides, I would like to ask if, is it any difference for io.sort.mb and mapreduce.task.io.sort.mb? Or they are just the same? </p>