title: MapReduce job Output sort order
body: <p>i can see in my mapreduce jobs that the output of the reducer part is sorted by key ..</p>
  
  <p>so if i have set number of reducers to 10, the output directory would contain 10 files and each of those output files have a sorted data.</p>
  
  <p>the reason i am putting it here is that even though all the files have sorted data but these files itself are not sorted.. 
  for example : there are scenarios where the part-000* files have started from 0 and end at zzzz assuming i am using Text as the key.</p>
  
  <p>i was assumming that the file's should be sorted even within the files i.e file 1 should have a and the last file part--00009 should have entries with zzzz or atleaset > a </p>
  
  <p>assuming if i have all the alphabets uniformally distributed keys.</p>
  
  <p>could someone throw some light why such a behavior</p>