Merge pull request #1124 from tdonohue/DS-2832

DS-2832: Limit requiresIndexing() query to only returning the LAST_INDEXED_FIELD

dspace-api/src/main/java/org/dspace/discovery/SolrServiceImpl.java

@@ -591,6 +591,8 @@ public class SolrServiceImpl implements SearchService, IndexingService {
 
         SolrQuery query = new SolrQuery();
         query.setQuery("handle:" + handle);
+        // Specify that we ONLY want the LAST_INDEXED_FIELD returned in the field list (fl)
+        query.setParam(CommonParams.FL, LAST_INDEXED_FIELD);
         QueryResponse rsp;
 
         try {