title: Write sequence file using mapreduce and org.apache.hadoop.fs. differences?
body: <p>I see example  of writing sequence file into hdfs using either <code>org.apache.hadoop.fs</code> package or mapreduce. My questions are :</p>
  
  <ol>
  <li>What are the differences?</li>
  <li>Is the end result, I mean the sequence file written in HDFS with both methods come up to be the same?</li>
  <li>I only tried the <code>org.apache.hadoop.fs</code> to write sequence file, when I tried to use <code>hadoop fs -text</code> to view result, I see the "key" still attached in each record/block?  Would it be the same if I used mapreduce to produce the sequence file?  I rather not to see the "key"</li>
  <li>How does one decide which method to use to write sequence file into HDFS?</li>
  </ol>