title: hadoop strategy with big gzip files
body: <p>I will copy a lot of big weblogs file compressed as gzip in hadoop.
  I will need run many map/reduce on these file.</p>
  
  <p>To my understanding, only one Map/Reduce will be run by file. 
  In my case, it's not acceptable because we need these job to complete as quickly as possible.</p>
  
  <p>Is it common practice to split gzip file in smaller chunk (before copying them in hadoop or after) to be 
  able to run as many map/reduce as possible ?</p>
  
  <p>Thanks for your help.</p>