@Shawn I'm getting the Bad Request again, with the original code snippet I posted, it appears to be an 'illegal' string field.
SOLR log ----------------------------------------------------------------------------- INFO: {add=[mgid:arc:content:jokers.com:694d5bf8-ecfd-11e0-aca6-0026b9414f30]} 0 7 Mar 12, 2015 12:15:09 AM org.apache.solr.common.SolrException log SEVERE: org.apache.solr.common.SolrException: ERROR: [doc=mgid:arc:content:jokers.com:694d5bf8-ecfd-11e0-aca6-0026b9414f30] multiple values encountered for non multiValued field image_url_s: [mgid:file:gsp:movie-assets:/movie-assets/cc/images/shows/miami-beach/episode-thumbnails/specials/iamstupid-the-movie_4x3.jpg, mgid:file:gsp:movie-assets:/movie-assets/cc/images/shows/miami-beach/episode-thumbnails/specials/iamstupid-the-movie_4x3.jpg] at org.apache.solr.update.DocumentBuilder.toDocument(DocumentBuilder.java:246) at org.apache.solr.update.processor.RunUpdateProcessor.processAdd(RunUpdateProcessorFactory.java:60) at org.apache.solr.update.processor.LogUpdateProcessor.processAdd(LogUpdateProcessorFactory.java:115) at org.apache.solr.handler.XMLLoader.processUpdate(XMLLoader.java:158) at org.apache.solr.handler.XMLLoader.load(XMLLoader.java:79) SolrJ Log shows the doc being sent (this is the offending field only) ---------------------------------------------------------------------------------------- <field name="image_url_s"></field> I will investigate on the feeds side, the existing SolrJ code is not the culprit. But I'd still like a more elegant solution. If a SolrJ 5 client can talk to a 3.5 host I'm willing to go there. I know I'm not the only one who would like to address collections on the fly. thx Dan -- View this message in context: http://lucene.472066.n3.nabble.com/Can-a-single-SolrServer-instance-update-multiple-collections-tp4192480p4192545.html Sent from the Solr - User mailing list archive at Nabble.com.