title: Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out
body: <p>I am trying to run mapreduce job on two node cluster. I am getting the following error
  Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.</p>
  
  <p>I read through some posts which say it is due to problem in /etc/hosts</p>
  
  <p>my /etc/hosts in master looks like this.( Also, master itself is a slave):<br>
  127.0.0.1   localhost<br>
  127.0.1.1   xyz<br>
  10.140.169.41 master<br>
  10.140.169.38 slave  </p>
  
  <p>/etc/hosts in slave looks like this</p>
  
  <p>127.0.0.1     localhost<br>
  127.0.1.1      abc<br>
  10.140.169.41 master<br>
  10.140.169.38 slave</p>
  
  <p>I have turned off the firewall</p>
  
  <p>Any help will be greatly appreciated</p>