title: How scroll in elasticsearch handles continually updating data?
body: <p><a href="http://www.elastic.co/guide/en/elasticsearch/guide/master/reindex.html" rel="nofollow">Here</a> is an example with reindexing. But what if <code>date</code> field is updating during reindex? And after several scroll requests I need to set date inteval from <code>date</code> to <code>now</code>. How elasticsearch scroll handle this situation: it just scroll documents with old <code>date</code> value or scroll forever untill update requests ends?</p>