svn commit: r1854579 - /jackrabbit/oak/trunk/oak-segment-tar/src/test/java/org/apache/jackrabbit/oak/segment/file/LargeNumberOfChildNodeUpdatesIT.java

[md...@apache.org]

Author: mduerig
Date: Fri Mar  1 12:49:12 2019
New Revision: 1854579

URL: http://svn.apache.org/viewvc?rev=1854579&view=rev
Log:
OAK-8066: Nodes with many direct children can lead to OOME when saving
Test case

Added:
    jackrabbit/oak/trunk/oak-segment-tar/src/test/java/org/apache/jackrabbit/oak/segment/file/LargeNumberOfChildNodeUpdatesIT.java

Added: jackrabbit/oak/trunk/oak-segment-tar/src/test/java/org/apache/jackrabbit/oak/segment/file/LargeNumberOfChildNodeUpdatesIT.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/trunk/oak-segment-tar/src/test/java/org/apache/jackrabbit/oak/segment/file/LargeNumberOfChildNodeUpdatesIT.java?rev=1854579&view=auto
==============================================================================
--- jackrabbit/oak/trunk/oak-segment-tar/src/test/java/org/apache/jackrabbit/oak/segment/file/LargeNumberOfChildNodeUpdatesIT.java (added)
+++ jackrabbit/oak/trunk/oak-segment-tar/src/test/java/org/apache/jackrabbit/oak/segment/file/LargeNumberOfChildNodeUpdatesIT.java Fri Mar  1 12:49:12 2019
@@ -0,0 +1,89 @@
+/*
+ * 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.segment.file;
+
+import static java.lang.System.getProperty;
+import static org.apache.jackrabbit.oak.segment.DefaultSegmentWriterBuilder.defaultSegmentWriterBuilder;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assume.assumeTrue;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.apache.jackrabbit.oak.segment.DefaultSegmentWriter;
+import org.apache.jackrabbit.oak.segment.RecordId;
+import org.apache.jackrabbit.oak.segment.SegmentNodeBuilder;
+import org.apache.jackrabbit.oak.segment.SegmentNodeState;
+import org.apache.jackrabbit.oak.segment.file.tar.GCGeneration;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+
+// *<p>The test is <b>disabled</b> by default, to run it you need to set the {@code SegmentCompactionIT} system property:<br>
+// * {@code mvn test -Dtest=SegmentCompactionIT -Dtest.opts.memory=-Xmx4G}
+
+/**
+ * This test asserts that a large number of child nodes can be added in a single
+ * transaction. Due to its long running time the test needs to be explicitly enabled
+ * via {@code -Dtest=LargeNumberOfChildNodeUpdatesIT}.
+ * Used {@code -DLargeNumberOfChildNodeUpdatesIT.child-count=<int>} to control the number
+ * of child nodes used by this test. Default is 5000000.
+ */
+public class LargeNumberOfChildNodeUpdatesIT {
+
+    /** Only run if explicitly asked to via -Dtest=LargeNumberOfChildNodeUpdatesIT */
+    private static final boolean ENABLED =
+            LargeNumberOfChildNodeUpdatesIT.class.getSimpleName().equals(getProperty("test"));
+
+    private static final int NODE_COUNT = Integer
+            .getInteger("LargeNumberOfChildNodeUpdatesIT.child-count", 5000000);
+
+    @Rule
+    public final TemporaryFolder folder = new TemporaryFolder(new File("target"));
+
+    @Before
+    public void setup() throws IOException, InvalidFileStoreVersionException {
+        assumeTrue(ENABLED);
+    }
+
+    @Test
+    public void testNode() throws IOException, InvalidFileStoreVersionException {
+        try (FileStore fileStore = FileStoreBuilder.fileStoreBuilder(folder.getRoot()).build()) {
+            DefaultSegmentWriter writer = defaultSegmentWriterBuilder("test")
+                    .withGeneration(GCGeneration.newGCGeneration(1, 1, false))
+                    .build(fileStore);
+
+            SegmentNodeState root = fileStore.getHead();
+            SegmentNodeBuilder builder = root.builder();
+            for (int k = 0; k < NODE_COUNT; k++) {
+                builder.setChildNode("n-" + k);
+            }
+
+            SegmentNodeState node1 = builder.getNodeState();
+            RecordId nodeId = writer.writeNode(node1);
+            SegmentNodeState node2 = fileStore.getReader().readNode(nodeId);
+
+            assertNotEquals(node1.getRecordId(), node2.getRecordId());
+            assertEquals(node1, node2);
+        }
+    }
+
+}