sues.             </para>             <para>                 <emphasis>Hadoop: </emphasis>How can I help?             </para>             <para>                 <emphasis>You: </emphasis>I need to count words in a document.             </para>             <para>                 <emphasis>Hadoop: </emphasis>I will read the words and give them to you, one at a time, can you                 count that?             </para>             <para>                 <emphasis>You: </emphasis>Yes, I will assign a count of 0 to each and give them back to you.             </para>             <para>                 <emphasis>Hadoop: </emphasis>Very good. I will sort them, and will give them back to you in groups,                 grouping the same words together. Can you count that?             </para>             <para>                 <emphasis>You: </emphasis>Yes, I will go through them and give you back each word and its count.             </para>             <para>                 <emphasis>Hadoop: </emphasis>I will record each word with its count, and we'll be done.             </para>             <para>