title: Saving files in Spark
body: <p>There are two operations on RDD to save. One is <code>saveAsTextFile</code> and other is saveAsObjectFile. I understand <code>saveAsTextFile</code>, but not <code>saveAsObjectFile</code>. I am new to Spark and scala and hence I am curious about <code>saveAsObjectFile</code>. </p>
  
  <p>1) Is it sequence file from Hadoop or some thing different? </p>
  
  <p>2) Can I read those files which are generated using <code>saveAsObjectFile</code> using Map Reduce? If yes, how?</p>