title: Change the permissions for an existing user in hdfs on linux
body: <p>I am new to Hadoop and I've run across an issue I'm not sure how to solve. </p>
  
  <p>I have two existing HDFS users: one called hdfs and one called user1. When I write a file to HDFS as user1, both users can see and delete the files. However if I add the file as the user hdfs, user1 throws a file not found error when I try to use it. Why would one user be able to edit a file while the other can't? Is there anything I can do to allow user1 to also be able to edit the file?</p>
  
  <p>Here are the permissions for the users:</p>
  
  <pre><code>hdfs  = drwxr-xr-x
  user1 = drwxrwxr-x
  </code></pre>
  
  <p>I am running HDFS as part of OpenJDK 1.8 on CentOS 6.6 </p>