diff --git a/oak-jcr/src/test/java/org/apache/jackrabbit/oak/jcr/ConcurrentAddReferenceTest.java b/oak-jcr/src/test/java/org/apache/jackrabbit/oak/jcr/ConcurrentAddReferenceTest.java
new file mode 100644
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--- /dev/null
+++ b/oak-jcr/src/test/java/org/apache/jackrabbit/oak/jcr/ConcurrentAddReferenceTest.java
@@ -0,0 +1,130 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.jackrabbit.oak.jcr;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+import javax.jcr.Session;
+import javax.jcr.nodetype.NodeType;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.google.common.collect.Iterators;
+
+import static org.apache.jackrabbit.commons.JcrUtils.in;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
+
+/**
+ * ConcurrentAddIT adds nodes with multiple sessions in separate
+ * locations of the repository and creates references to a single node.
+ */
+public class ConcurrentAddReferenceTest extends AbstractRepositoryTest {
+
+ private static final int NUM_WORKERS = 10;
+
+ private static final int NODES_PER_WORKER = 100;
+
+ private String refPath;
+
+ public ConcurrentAddReferenceTest(NodeStoreFixture fixture) {
+ super(fixture);
+ }
+
+ @Before
+ public void setup() throws RepositoryException {
+ Session session = getAdminSession();
+ Node root = session.getRootNode();
+ Node testNode = root.addNode("test_referenceable");
+ testNode.addMixin(NodeType.MIX_REFERENCEABLE);
+ session.save();
+ refPath = testNode.getPath();
+ }
+
+ @After
+ public void tearDown() throws RepositoryException {
+ Session session = getAdminSession();
+ session.removeItem("/test");
+ session.removeItem(refPath);
+ session.save();
+ }
+
+ @SuppressWarnings("unchecked")
+ @Test
+ public void addReferences() throws Exception {
+ List exceptions = Collections.synchronizedList(new ArrayList());
+ Node test = getAdminSession().getRootNode().addNode("test");
+ List worker = new ArrayList();
+ for (int i = 0; i < NUM_WORKERS; i++) {
+ String path = test.addNode("node" + i).getPath();
+ worker.add(new Thread(new Worker(
+ createAdminSession(), path, exceptions)));
+ }
+ getAdminSession().save();
+ for (Thread t : worker) {
+ t.start();
+ }
+ for (Thread t : worker) {
+ t.join();
+ }
+ for (Exception e : exceptions) {
+ fail(e.toString());
+ }
+ getAdminSession().refresh(false);
+ for (Node n : in((Iterator) test.getNodes())) {
+ assertEquals(NODES_PER_WORKER, Iterators.size(n.getNodes()));
+ }
+ }
+
+ private final class Worker implements Runnable {
+
+ private final Session s;
+ private final String path;
+ private final List exceptions;
+
+ Worker(Session s, String path, List exceptions) {
+ this.s = s;
+ this.path = path;
+ this.exceptions = exceptions;
+ }
+
+ @Override
+ public void run() {
+ try {
+ s.refresh(false);
+ Node n = s.getNode(path);
+ Node refNode = s.getNode(refPath);
+ for (int i = 0; i < NODES_PER_WORKER; i++) {
+ Node n1 = n.addNode("node" + i);
+ n1.setProperty("myRef", refNode);
+ s.save();
+ }
+ } catch (RepositoryException e) {
+ exceptions.add(e);
+ } finally {
+ s.logout();
+ }
+ }
+ }
+}