Index: src/java/org/apache/nutch/indexer/solr/SolrDeleteDuplicates.java
===================================================================
--- src/java/org/apache/nutch/indexer/solr/SolrDeleteDuplicates.java	(revision 1097411)
+++ src/java/org/apache/nutch/indexer/solr/SolrDeleteDuplicates.java	(working copy)
@@ -316,6 +316,8 @@
     try {
       if (numDeletes > 0) {
         updateRequest.process(solr);
+
+        solr.commit();
       }
     } catch (SolrServerException e) {
       throw new IOException(e);