I assume your're indexing on the same server that is used to execute search queries. Adding 20K documents in bulk could cause the Solr Server to 'stop the world' where the server would stop responding to queries.
My suggestion is - Setup master/slave to insulate your clients from 'stop the world' events during indexing. - Update in batches with a commit at the end of the batch. -- View this message in context: http://lucene.472066.n3.nabble.com/Bulk-Indexing-tp3997745p3997815.html Sent from the Solr - User mailing list archive at Nabble.com.
