title: what is /tmp directory in hadoop hdfs?
body: <p>I have cluster of 4 datanodes and hdfs structure on each node is as below</p>
  
  <p><img src="https://i.stack.imgur.com/sZcI0.png" alt="enter image description here"></p>
  
  <p>I am facing disk space issue ,  as you can see the <strong>/tmp</strong> folder from hdfs has occupied more space(217GB). So  i tried to investigate the data from <strong>/tmp</strong> folder. I found following temp files. I accessed these temp folders each contains some part files of 10gb to 20 gb in size.
  I want to clear this /tmp directory. can anyone please let me know the consequences of deleting these tmp folders or part files. Will it affect my cluster?</p>
  
  <p><img src="https://i.stack.imgur.com/mNkGG.png" alt="enter image description here"></p>