title: Should i use Trident to compute the global mean of tuples in Storm?
body: <p>I want to compute with Storm the mean from incoming tuples made of [int id,int value]. 
  As you can see i can't partition the data by using a fields grouping. I need a topology architecture to distribute this computation and the only way im thinking of is doing mini batches within each bolt instances and then aggregate.</p>
  
  <p>I kind of understood that trident was the appropriate solution to do mini-batch processing within storm.</p>
  
  <p>What is the best practice to compute global analytics with storm like means, global count, std-devs when you can't partition the data based on attribute? Any topology example?</p>