svn commit: r1700809 - /jackrabbit/oak/trunk/oak-jcr/src/test/java/org/apache/jackrabbit/oak/jcr/ConcurrentIndexUpdateIT.java

[mr...@apache.org]

Author: mreutegg
Date: Wed Sep  2 13:21:12 2015
New Revision: 1700809

URL: http://svn.apache.org/r1700809
Log:
OAK-3042: Suspend commit on conflict

Test to reproduce unfair conflict behavior

Added:
    jackrabbit/oak/trunk/oak-jcr/src/test/java/org/apache/jackrabbit/oak/jcr/ConcurrentIndexUpdateIT.java   (with props)

Added: jackrabbit/oak/trunk/oak-jcr/src/test/java/org/apache/jackrabbit/oak/jcr/ConcurrentIndexUpdateIT.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/trunk/oak-jcr/src/test/java/org/apache/jackrabbit/oak/jcr/ConcurrentIndexUpdateIT.java?rev=1700809&view=auto
==============================================================================
--- jackrabbit/oak/trunk/oak-jcr/src/test/java/org/apache/jackrabbit/oak/jcr/ConcurrentIndexUpdateIT.java (added)
+++ jackrabbit/oak/trunk/oak-jcr/src/test/java/org/apache/jackrabbit/oak/jcr/ConcurrentIndexUpdateIT.java Wed Sep  2 13:21:12 2015
@@ -0,0 +1,135 @@
+/*
+ * 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.List;
+import java.util.concurrent.atomic.AtomicLong;
+
+import javax.jcr.Node;
+import javax.jcr.Session;
+
+import com.google.common.collect.Lists;
+
+import org.apache.jackrabbit.oak.commons.PathUtils;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static org.junit.Assume.assumeTrue;
+
+public class ConcurrentIndexUpdateIT extends AbstractRepositoryTest {
+
+    private static final boolean ENABLED = Boolean.getBoolean(ConcurrentIndexUpdateIT.class.getSimpleName());
+
+    private static final int NUM_WRITERS = 3;
+    private static final String TEST_PATH = "/test/folder";
+
+    public ConcurrentIndexUpdateIT(NodeStoreFixture fixture) {
+        super(fixture);
+    }
+
+    @BeforeClass
+    public static void before() {
+        assumeTrue(ENABLED);
+    }
+
+    @Test
+    public void updates() throws Exception {
+        Node n = getAdminSession().getRootNode();
+        for (String name : PathUtils.elements(TEST_PATH)) {
+            n = n.addNode(name, "oak:Unstructured");
+        }
+        getAdminSession().save();
+
+        final List<Exception> exceptions = Collections.synchronizedList(new ArrayList<Exception>());
+        List<AtomicLong> counters = Lists.newArrayList();
+        List<Thread> writers = Lists.newArrayList();
+        for (int i = 0; i < NUM_WRITERS; i++) {
+            final int id = i;
+            final AtomicLong counter = new AtomicLong();
+            counters.add(counter);
+            writers.add(new Thread(new Runnable() {
+                @Override
+                public void run() {
+                    try {
+                        Session s = createAdminSession();
+                        try {
+                            runTest(s.getNode(TEST_PATH), id, counter);
+                        } finally {
+                            s.logout();
+                        }
+                    } catch (Exception e) {
+                        exceptions.add(e);
+                    }
+                }
+            }));
+        }
+
+        for (Thread t : writers) {
+            t.start();
+        }
+        while (anyRunning(writers)) {
+            List<Long> before = currentValues(counters);
+            Thread.sleep(1000);
+            List<Long> after = currentValues(counters);
+            System.out.println(diff(after, before));
+        }
+
+        for (Exception e : exceptions) {
+            throw e;
+        }
+    }
+
+    private List<Long> diff(List<Long> after, List<Long> before) {
+        List<Long> diff = Lists.newArrayListWithCapacity(after.size());
+        for (int i = 0; i < after.size(); i++) {
+            diff.add(after.get(i) - before.get(i));
+        }
+        return diff;
+    }
+
+    private List<Long> currentValues(List<AtomicLong> counters) {
+        List<Long> values = Lists.newArrayListWithCapacity(counters.size());
+        for (AtomicLong v : counters) {
+            values.add(v.get());
+        }
+        return values;
+    }
+
+    private static void runTest(Node n, int id, AtomicLong counter)
+            throws Exception {
+        for (int i = 0; i < 10000; i++) {
+            Node child = n.addNode("node-" + id, "nt:unstructured");
+            n.getSession().save();
+            counter.incrementAndGet();
+            child.remove();
+            n.getSession().save();
+            counter.incrementAndGet();
+        }
+    }
+
+    private static boolean anyRunning(Iterable<Thread> threads) {
+        for (Thread t : threads) {
+            if (t.isAlive()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+}

Propchange: jackrabbit/oak/trunk/oak-jcr/src/test/java/org/apache/jackrabbit/oak/jcr/ConcurrentIndexUpdateIT.java
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