title: Solr MultiValue Fields and adding values
body: <p>I am building a search engine, and have a not so unique ID for a lot of different names... So, for example, there could be an id of B0051QVF7A which would have multiple names like "Kindle" "Amazon Kindle" "Amazon Kindle 3G" "Kindle Ebook Reader" "New Kindle" etc.</p>
  
  <p>The problem, and question i have, is that i am trying to enter this data from a DB of 11 ish million rows. each is being read one at a time. So i dont have all the names of each ID. I am adding new documents to the list each time.</p>
  
  <p>What i am trying to find out is how do i add names to an existing Document? if i am reading documentation correctly, it seems to overwrite the whole document, not add extra info to the field... i just want to add an extra name to the document multivalue field... </p>
  
  <p>I know this could cause some weird and wonderful "issues" if a name is removed (in the example above, "New Kindle" could be removed when a newer Kindle gets released) but i am thinking of recreating the index every now and again, to clear out issues like that (once a month or so. Its taking about 45min currently to create the index). </p>
  
  <p>So, how do you add a value to a multivalue field in solr for an existing document?</p>