Adding a specific mini test that exercises ServerTestUtils.startVolde…

…mortServer. This ~15 line program that simply starts some Voldemort servers using test utils can tickle two different intermittent failures:

(1) ObsoleteVersionException when loading cluster.xml

Testcase: startMultipleVoldemortServers took 0.385 sec
	Caused an ERROR
A successor version version()  to this version() exists for key cluster.xml
voldemort.versioning.ObsoleteVersionException: A successor version version()  to this version() exists for key cluster.xml

and

(2) A bind issue characterized as follows:

Testcase: startMultipleVoldemortServers took 2.066 sec
        Caused an ERROR
java.net.BindException: Address already in use
voldemort.VoldemortException: java.net.BindException: Address already in use
	at voldemort.server.niosocket.NioSocketService.startInner(NioSocketService.java:131)
	at voldemort.server.AbstractService.start(AbstractService.java:62)
	at voldemort.server.VoldemortServer.startInner(VoldemortServer.java:255)
	at voldemort.server.AbstractService.start(AbstractService.java:62)
	at voldemort.ServerTestUtils.startVoldemortServer(ServerTestUtils.java:666)
	at voldemort.utils.ServerTestUtilsTest.setUp(ServerTestUtilsTest.java:50)
Caused by: java.net.BindException: Address already in use
	at sun.nio.ch.Net.bind(Native Method)
	at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:126)
	at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:59)
	at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:52)
	at voldemort.server.niosocket.NioSocketService.startInner(NioSocketService.java:125)

test/unit/voldemort/utils/ServerTestUtilsTest.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright 2008-2009 LinkedIn, Inc
+ * 
+ * Licensed 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 voldemort.utils;
+
+import static org.junit.Assert.assertTrue;
+
+import java.io.IOException;
+import java.util.Properties;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import voldemort.ServerTestUtils;
+import voldemort.TestUtils;
+import voldemort.cluster.Cluster;
+import voldemort.server.VoldemortServer;
+import voldemort.store.socket.SocketStoreFactory;
+import voldemort.store.socket.clientrequest.ClientRequestExecutorPool;
+
+public class ServerTestUtilsTest {
+
+    // private static String storesXmlfile = "test/common/voldemort/config/single-store.xml";
+    private static String storesXmlfile = "test/common/voldemort/config/stores.xml";
+    private SocketStoreFactory socketStoreFactory = new ClientRequestExecutorPool(2,
+                                                                                  10000,
+                                                                                  100000,
+                                                                                  32 * 1024);
+
+    @Before
+    public void setUp() throws IOException {
+        /*-
+        Cluster cluster = ServerTestUtils.getLocalCluster(1, new int[][] { { 0, 1, 2, 3, 4, 5, 6,
+                7, 8 } });
+        */
+        Cluster cluster = ServerTestUtils.getLocalCluster(8, new int[][] { { 0 }, { 1 }, { 2 },
+                { 3 }, { 4 }, { 5 }, { 6 }, { 7 } });
+
+        VoldemortServer[] servers = new VoldemortServer[8];
+
+        // for(int i = 0; i < 1; i++) {
+        for(int i = 0; i < 8; i++) {
+            servers[i] = ServerTestUtils.startVoldemortServer(socketStoreFactory,
+                                                              ServerTestUtils.createServerConfig(true,
+                                                                                                 i,
+                                                                                                 TestUtils.createTempDir()
+                                                                                                          .getAbsolutePath(),
+                                                                                                 null,
+                                                                                                 storesXmlfile,
+                                                                                                 new Properties()),
+                                                              cluster);
+        }
+    }
+
+    @Test
+    public void startMultipleVoldemortServers() {
+        assertTrue(true);
+    }
+}