ATLAS-3863: Avoid re-evaluating tag propagation when deleting relationship (edge)

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

@@ -407,22 +407,8 @@ public final class GraphHelper {
         return ret;
     }
 
-    public static List<AtlasEdge> getIncomingClassificationEdges(AtlasVertex classificationVertex) {
-        List<AtlasEdge> ret                = new ArrayList<>();
-        String          classificationName = getTypeName(classificationVertex);
-        Iterable        edges              = classificationVertex.query().direction(AtlasEdgeDirection.IN).label(CLASSIFICATION_LABEL)
-                                                                 .has(CLASSIFICATION_EDGE_NAME_PROPERTY_KEY, classificationName).edges();
-        if (edges != null) {
-            Iterator<AtlasEdge> iterator = edges.iterator();
-
-            while (iterator.hasNext()) {
-                AtlasEdge edge = iterator.next();
-
-                ret.add(edge);
-            }
-        }
-
-        return ret;
+    public static boolean hasEntityReferences(AtlasVertex classificationVertex) {
+        return classificationVertex.hasEdges(AtlasEdgeDirection.IN, CLASSIFICATION_LABEL);
     }
 
     public static List<AtlasVertex> getAllPropagatedEntityVertices(AtlasVertex classificationVertex) {

repository/src/main/java/org/apache/atlas/repository/store/graph/v1/DeleteHandlerV1.java

@@ -156,9 +156,6 @@ public abstract class DeleteHandlerV1 {
                 continue;
             }
 
-            // re-evaluate tag propagation
-            removeTagPropagation(edge);
-
             deleteEdge(edge, isInternal || forceDelete);
         }
     }
@@ -974,10 +971,8 @@ public abstract class DeleteHandlerV1 {
             LOG.debug("Deleting classification vertex", string(classificationVertex));
         }
 
-        List<AtlasEdge> incomingClassificationEdges = getIncomingClassificationEdges(classificationVertex);
-
         // delete classification vertex only if it has no more entity references (direct or propagated)
-        if (CollectionUtils.isEmpty(incomingClassificationEdges)) {
+        if (!hasEntityReferences(classificationVertex)) {
             _deleteVertex(classificationVertex, force);
         }
     }