title: How to name file when saveAsTextFile in spark?
body: <p>When saving as a textfile in spark version 1.5.1 I use:  <code>rdd.saveAsTextFile('&lt;drectory&gt;')</code>.  </p>
  
  <p>But if I want to find the file in that direcotry, how do I name it what I want?  </p>
  
  <p>Currently, I think it is named <code>part-00000</code>, which must be some default.  How do I give it a name?  </p>