ATLAS-2195: fix to close trasaction left open while queries index keys (#2)

repository/src/main/java/org/apache/atlas/repository/graph/GraphBackedSearchIndexer.java

@@ -261,9 +261,6 @@ public class GraphBackedSearchIndexer implements SearchIndexer, ActiveStateChang
 
             try {
                 management = provider.get().getManagementSystem();
-            } catch (RepositoryException excp) {
-                LOG.error("failed to get indexedKeys from graph", excp);
-            }
 
                 if (management != null) {
                     AtlasGraphIndex vertexIndex = management.getGraphIndex(Constants.VERTEX_INDEX);
@@ -279,6 +276,19 @@ public class GraphBackedSearchIndexer implements SearchIndexer, ActiveStateChang
 
                         vertexIndexKeys = indexKeys;
                     }
+
+                    management.commit();
+                }
+            } catch (Exception excp) {
+                LOG.error("getVertexIndexKeys(): failed to get indexedKeys from graph", excp);
+
+                if (management != null) {
+                    try {
+                        management.rollback();
+                    } catch (Exception e) {
+                        LOG.error("getVertexIndexKeys(): rollback failed", e);
+                    }
+                }
             }
         }