Index: src/main/java/org/apache/jackrabbit/core/query/lucene/SearchIndex.java
===================================================================
--- src/main/java/org/apache/jackrabbit/core/query/lucene/SearchIndex.java	(revision 1081825)
+++ src/main/java/org/apache/jackrabbit/core/query/lucene/SearchIndex.java	(working copy)
@@ -1572,6 +1572,9 @@
      */
     protected void retrieveAggregateRoot(
             Set<NodeId> removedIds, Map<NodeId, NodeState> map) {
+        if (removedIds.isEmpty()) {
+            return;
+        }
         if (indexingConfig != null) {
             AggregateRule[] aggregateRules = indexingConfig.getAggregateRules();
             if (aggregateRules == null) {