java - Hadoop循环 reducer

Question

我试图找到一种方法来“循环”我的 reducer ，例如:

for(String document: tempFrequencies.keySet())
{
if(list.get(0).equals(document))
{
testMap.put(key.toString(), DF.format(tfIDF));
}
}
//This allows me to create a hashmap which i plan to write out to context as Filename = key then all of the terms weights = value (a list I can parse out in the next job)

当前的代码将贯穿整个reduce，并为我提供list.get(0)所需的内容，但是问题是一旦完成整个reduce，我需要重新为list.get(1)等启动。关于减少阶段完成后如何循环的想法？

Answer 1

嵌套for循环

for(int i = 0; i < number_of_time; i++){
//your code

}

用i替换0。