title: How to remove a hadoop node from DFS but not from Mapred?
body: <p>I am fairly new to hadoop. For running some benchmarks, I need variety of hadoop configuration for comparison.</p>
  
  <p>I want to know a method to remove a hadoop slave from DFS (not running datanode daemon anymore) but not from Mapred (keep running tasktracker), or vice-versa.
  AFAIK, there is a single slave file for such hadoop nodes and not separate slave files for DFS and Mapred.</p>
  
  <p>Currently, I am trying to start both DFS and Mapred on the slave node , and then killing datanode on the slave. But it takes a while to put that node in to 'dead nodes' on HDFS GUI. Any parameter can be tuned to make this timeout quicker ?</p>
  
  <p>Thankssss</p>