title: How to overwrite/reuse the existing output path for Hadoop jobs again and agian
body: <p>I want to overwrite/reuse the existing output directory when I run my Hadoop job daily.
  Actually the output directory will store summarized output of each day's job run results.
  If I specify the same output directory it gives the error "output directory already exists".</p>
  
  <p>How to bypass this validation?</p>