Iterate twice on values (MapReduce)

Question

I receive an iterator as argument and I would like to iterate on values twice.

public void reduce(Pair key, Iterator          


        

Answer 1

After searching and doing so many tries and errors, I found a solution.

1. Declare a new collection (say cache) (linked list or Arraylist or any else)

2. Inside first iteration, assign the current iterator like below example:

   cache.add(new Text(current.get()))  
   

3. Iterate through cache:

   for (Text count : counts) {
       //counts is iterable object of Type Text
       cache.add(new Text(count.getBytes()));
   }
   for(Text value:cache) {
       // your logic..
   }