Batch indexing documents using ContentStreamUpdateRequest

[Tod]

This is a code fragment of how I am doing a ContentStreamUpdateRequest 
using CommonHTTPSolrServer:

  ContentStreamBase.URLStream csbu = new ContentStreamBase.URLStream(url);
  InputStream is = csbu.getStream();
  FastInputStream fis = new FastInputStream(is);

  csur.addContentStream(csbu);
  csur.setParam("literal.content_id","000000");
  csur.setParam("literal.contentitle","This is a test");
  csur.setParam("literal.title","This is a test");
  server.request(csur);
  server.commit();

  fis.close();


This works fine for one document (a pdf in this case).  When I surround 
this with a while loop and try adding multiple documents I get:

org.apache.solr.client.solrj.SolrServerException: java.io.IOException: 
stream is closed

I've tried commenting out the fis.close, and also using just a plain 
InputStream with and without a .close() call - neither work.  Is there a 
way to do this that I'm missing?


Thanks - Tod