YARN-3749. We should make a copy of configuration when init

MiniYARNCluster with multiple RMs. Contributed by Chun Chen

(cherry picked from commit 5766a04428)

hadoop-yarn-project/CHANGES.txt

@@ -433,6 +433,9 @@ Release 2.8.0 - UNRELEASED
 
     YARN-3762. FairScheduler: CME on FSParentQueue#getQueueUserAclInfo. (kasha)
 
+    YARN-3749. We should make a copy of configuration when init MiniYARNCluster
+    with multiple RMs. (Chun Chen via xgong)
+
 Release 2.7.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java

@@ -1967,7 +1967,7 @@ public class YarnConfiguration extends Configuration {
   public InetSocketAddress updateConnectAddr(String name,
                                              InetSocketAddress addr) {
     String prefix = name;
-    if (HAUtil.isHAEnabled(this)) {
+    if (HAUtil.isHAEnabled(this) && getServiceAddressConfKeys(this).contains(name)) {
       prefix = HAUtil.addSuffix(prefix, HAUtil.getRMHAId(this));
     }
     return super.updateConnectAddr(prefix, addr);

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/ProtocolHATestBase.java

@@ -36,6 +36,7 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicBoolean;
 
+import org.apache.hadoop.yarn.server.resourcemanager.HATestUtil;
 import org.junit.Assert;
 
 import org.apache.hadoop.conf.Configuration;
@@ -101,7 +102,6 @@ import org.apache.hadoop.yarn.api.records.YarnApplicationAttemptState;
 import org.apache.hadoop.yarn.api.records.YarnApplicationState;
 import org.apache.hadoop.yarn.api.records.YarnClusterMetrics;
 import org.apache.hadoop.yarn.client.api.YarnClient;
-import org.apache.hadoop.yarn.conf.HAUtil;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.exceptions.YarnException;
 import org.apache.hadoop.yarn.server.MiniYARNCluster;
@@ -161,26 +161,6 @@ public abstract class ProtocolHATestBase extends ClientBaseWithFixes {
   protected Thread failoverThread = null;
   private volatile boolean keepRunning;
 
-  private void setConfForRM(String rmId, String prefix, String value) {
-    conf.set(HAUtil.addSuffix(prefix, rmId), value);
-  }
-
-  private void setRpcAddressForRM(String rmId, int base) {
-    setConfForRM(rmId, YarnConfiguration.RM_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_SCHEDULER_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_SCHEDULER_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_ADMIN_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_ADMIN_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_RESOURCE_TRACKER_ADDRESS,
-        "0.0.0.0:" + (base + YarnConfiguration
-            .DEFAULT_RM_RESOURCE_TRACKER_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_WEBAPP_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_WEBAPP_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_WEBAPP_HTTPS_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_WEBAPP_HTTPS_PORT));
-  }
-
   @Before
   public void setup() throws IOException {
     failoverThread = null;
@@ -189,8 +169,8 @@ public abstract class ProtocolHATestBase extends ClientBaseWithFixes {
     conf.setBoolean(YarnConfiguration.RM_HA_ENABLED, true);
     conf.setInt(YarnConfiguration.CLIENT_FAILOVER_MAX_ATTEMPTS, 5);
     conf.set(YarnConfiguration.RM_HA_IDS, RM1_NODE_ID + "," + RM2_NODE_ID);
-    setRpcAddressForRM(RM1_NODE_ID, RM1_PORT_BASE);
+    HATestUtil.setRpcAddressForRM(RM1_NODE_ID, RM1_PORT_BASE, conf);
-    setRpcAddressForRM(RM2_NODE_ID, RM2_PORT_BASE);
+    HATestUtil.setRpcAddressForRM(RM2_NODE_ID, RM2_PORT_BASE, conf);
 
     conf.setLong(YarnConfiguration.CLIENT_FAILOVER_SLEEPTIME_BASE_MS, 100L);
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/TestApplicationMasterServiceProtocolOnHA.java

@@ -54,18 +54,18 @@ public class TestApplicationMasterServiceProtocolOnHA
   public void initialize() throws Exception {
     startHACluster(0, false, false, true);
     attemptId = this.cluster.createFakeApplicationAttemptId();
-    amClient = ClientRMProxy
-        .createRMProxy(this.conf, ApplicationMasterProtocol.class);
 
     Token<AMRMTokenIdentifier> appToken =
         this.cluster.getResourceManager().getRMContext()
           .getAMRMTokenSecretManager().createAndGetAMRMToken(attemptId);
-    appToken.setService(ClientRMProxy.getAMRMTokenService(conf));
+    appToken.setService(ClientRMProxy.getAMRMTokenService(this.conf));
     UserGroupInformation.setLoginUser(UserGroupInformation
-        .createRemoteUser(UserGroupInformation.getCurrentUser()
+        .createRemoteUser(UserGroupInformation.getCurrentUser().getUserName()));
-            .getUserName()));
     UserGroupInformation.getCurrentUser().addToken(appToken);
     syncToken(appToken);
+
+    amClient = ClientRMProxy
+        .createRMProxy(this.conf, ApplicationMasterProtocol.class);
   }
 
   @After

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/TestRMFailover.java

@@ -38,11 +38,11 @@ import org.apache.hadoop.ha.HAServiceProtocol.HAServiceState;
 import org.apache.hadoop.service.Service.STATE;
 import org.apache.hadoop.yarn.api.records.ApplicationId;
 import org.apache.hadoop.yarn.client.api.YarnClient;
-import org.apache.hadoop.yarn.conf.HAUtil;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.exceptions.YarnException;
 import org.apache.hadoop.yarn.server.MiniYARNCluster;
 import org.apache.hadoop.yarn.server.resourcemanager.AdminService;
+import org.apache.hadoop.yarn.server.resourcemanager.HATestUtil;
 import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
 import org.apache.hadoop.yarn.server.webproxy.WebAppProxyServer;
 import org.junit.After;
@@ -66,34 +66,14 @@ public class TestRMFailover extends ClientBaseWithFixes {
   private MiniYARNCluster cluster;
   private ApplicationId fakeAppId;
 
-
-  private void setConfForRM(String rmId, String prefix, String value) {
-    conf.set(HAUtil.addSuffix(prefix, rmId), value);
-  }
-
-  private void setRpcAddressForRM(String rmId, int base) {
-    setConfForRM(rmId, YarnConfiguration.RM_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_SCHEDULER_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_SCHEDULER_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_ADMIN_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_ADMIN_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_RESOURCE_TRACKER_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_RESOURCE_TRACKER_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_WEBAPP_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_WEBAPP_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_WEBAPP_HTTPS_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_WEBAPP_HTTPS_PORT));
-  }
-
   @Before
   public void setup() throws IOException {
     fakeAppId = ApplicationId.newInstance(System.currentTimeMillis(), 0);
     conf = new YarnConfiguration();
     conf.setBoolean(YarnConfiguration.RM_HA_ENABLED, true);
     conf.set(YarnConfiguration.RM_HA_IDS, RM1_NODE_ID + "," + RM2_NODE_ID);
-    setRpcAddressForRM(RM1_NODE_ID, RM1_PORT_BASE);
+    HATestUtil.setRpcAddressForRM(RM1_NODE_ID, RM1_PORT_BASE, conf);
-    setRpcAddressForRM(RM2_NODE_ID, RM2_PORT_BASE);
+    HATestUtil.setRpcAddressForRM(RM2_NODE_ID, RM2_PORT_BASE, conf);
 
     conf.setLong(YarnConfiguration.CLIENT_FAILOVER_SLEEPTIME_BASE_MS, 100L);
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/conf/TestYarnConfiguration.java

@@ -27,6 +27,7 @@ import java.net.InetSocketAddress;
 import java.net.SocketAddress;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.assertFalse;
 
@@ -202,5 +203,26 @@ public class TestYarnConfiguration {
         serverAddress);
 
     assertTrue(resourceTrackerConnectAddress.toString().startsWith("yo.yo.yo"));
+
+    //tests updateConnectAddr won't add suffix to NM service address configurations
+    conf = new YarnConfiguration();
+    conf.set(YarnConfiguration.NM_LOCALIZER_ADDRESS, "yo.yo.yo");
+    conf.set(YarnConfiguration.NM_BIND_HOST, "0.0.0.0");
+    conf.setBoolean(YarnConfiguration.RM_HA_ENABLED, true);
+    conf.set(YarnConfiguration.RM_HA_ID, "rm1");
+
+    serverAddress = new InetSocketAddress(
+        YarnConfiguration.DEFAULT_NM_LOCALIZER_ADDRESS.split(":")[0],
+        Integer.valueOf(YarnConfiguration.DEFAULT_NM_LOCALIZER_ADDRESS.split(":")[1]));
+
+    InetSocketAddress localizerAddress = conf.updateConnectAddr(
+        YarnConfiguration.NM_BIND_HOST,
+        YarnConfiguration.NM_LOCALIZER_ADDRESS,
+        YarnConfiguration.DEFAULT_NM_LOCALIZER_ADDRESS,
+        serverAddress);
+
+    assertTrue(localizerAddress.toString().startsWith("yo.yo.yo"));
+    assertNull(conf.get(
+        HAUtil.addSuffix(YarnConfiguration.NM_LOCALIZER_ADDRESS, "rm1")));
   }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ApplicationMasterService.java

@@ -107,7 +107,7 @@ public class ApplicationMasterService extends AbstractService implements
   private static final Log LOG = LogFactory.getLog(ApplicationMasterService.class);
   private final AMLivelinessMonitor amLivelinessMonitor;
   private YarnScheduler rScheduler;
-  private InetSocketAddress bindAddress;
+  private InetSocketAddress masterServiceAddress;
   private Server server;
   private final RecordFactory recordFactory =
       RecordFactoryProvider.getRecordFactory(null);
@@ -123,15 +123,18 @@ public class ApplicationMasterService extends AbstractService implements
   }
 
   @Override
-  protected void serviceStart() throws Exception {
+  protected void serviceInit(Configuration conf) throws Exception {
-    Configuration conf = getConfig();
+    masterServiceAddress = conf.getSocketAddr(
-    YarnRPC rpc = YarnRPC.create(conf);
-
-    InetSocketAddress masterServiceAddress = conf.getSocketAddr(
         YarnConfiguration.RM_BIND_HOST,
         YarnConfiguration.RM_SCHEDULER_ADDRESS,
         YarnConfiguration.DEFAULT_RM_SCHEDULER_ADDRESS,
         YarnConfiguration.DEFAULT_RM_SCHEDULER_PORT);
+  }
+
+  @Override
+  protected void serviceStart() throws Exception {
+    Configuration conf = getConfig();
+    YarnRPC rpc = YarnRPC.create(conf);
 
     Configuration serverConf = conf;
     // If the auth is not-simple, enforce it to be token-based.
@@ -160,7 +163,7 @@ public class ApplicationMasterService extends AbstractService implements
     }
     
     this.server.start();
-    this.bindAddress =
+    this.masterServiceAddress =
         conf.updateConnectAddr(YarnConfiguration.RM_BIND_HOST,
                                YarnConfiguration.RM_SCHEDULER_ADDRESS,
                                YarnConfiguration.DEFAULT_RM_SCHEDULER_ADDRESS,
@@ -170,7 +173,7 @@ public class ApplicationMasterService extends AbstractService implements
 
   @Private
   public InetSocketAddress getBindAddress() {
-    return this.bindAddress;
+    return this.masterServiceAddress;
   }
 
   // Obtain the needed AMRMTokenIdentifier from the remote-UGI. RPC layer

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/HATestUtil.java

@@ -0,0 +1,38 @@
+/**
+ * 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.hadoop.yarn.server.resourcemanager;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.yarn.conf.HAUtil;
+import org.apache.hadoop.yarn.conf.YarnConfiguration;
+
+public class HATestUtil {
+
+  public static void setRpcAddressForRM(String rmId, int base,
+      Configuration conf) {
+    for (String confKey : YarnConfiguration.getServiceAddressConfKeys(conf)) {
+      setConfForRM(rmId, confKey, "0.0.0.0:" + (base +
+          YarnConfiguration.getRMDefaultPortNumber(confKey, conf)), conf);
+    }
+  }
+
+  public static void setConfForRM(String rmId, String prefix, String value,
+      Configuration conf) {
+    conf.set(HAUtil.addSuffix(prefix, rmId), value);
+  }
+}

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMEmbeddedElector.java

@@ -22,7 +22,6 @@ import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.ha.ClientBaseWithFixes;
 import org.apache.hadoop.ha.ServiceFailedException;
-import org.apache.hadoop.yarn.conf.HAUtil;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.junit.Before;
 import org.junit.Test;
@@ -42,25 +41,6 @@ public class TestRMEmbeddedElector extends ClientBaseWithFixes {
   private Configuration conf;
   private AtomicBoolean callbackCalled;
 
-  private void setConfForRM(String rmId, String prefix, String value) {
-    conf.set(HAUtil.addSuffix(prefix, rmId), value);
-  }
-
-  private void setRpcAddressForRM(String rmId, int base) {
-    setConfForRM(rmId, YarnConfiguration.RM_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_SCHEDULER_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_SCHEDULER_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_ADMIN_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_ADMIN_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_RESOURCE_TRACKER_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_RESOURCE_TRACKER_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_WEBAPP_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_WEBAPP_PORT));
-    setConfForRM(rmId, YarnConfiguration.RM_WEBAPP_HTTPS_ADDRESS, "0.0.0.0:" +
-        (base + YarnConfiguration.DEFAULT_RM_WEBAPP_HTTPS_PORT));
-  }
-
   @Before
   public void setup() throws IOException {
     conf = new YarnConfiguration();
@@ -73,8 +53,8 @@ public class TestRMEmbeddedElector extends ClientBaseWithFixes {
 
     conf.set(YarnConfiguration.RM_HA_IDS, RM1_NODE_ID + "," + RM2_NODE_ID);
     conf.set(YarnConfiguration.RM_HA_ID, RM1_NODE_ID);
-    setRpcAddressForRM(RM1_NODE_ID, RM1_PORT_BASE);
+    HATestUtil.setRpcAddressForRM(RM1_NODE_ID, RM1_PORT_BASE, conf);
-    setRpcAddressForRM(RM2_NODE_ID, RM2_PORT_BASE);
+    HATestUtil.setRpcAddressForRM(RM2_NODE_ID, RM2_PORT_BASE, conf);
 
     conf.setLong(YarnConfiguration.CLIENT_FAILOVER_SLEEPTIME_BASE_MS, 100L);
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/src/test/java/org/apache/hadoop/yarn/server/MiniYARNCluster.java

@@ -287,10 +287,12 @@ public class MiniYARNCluster extends CompositeService {
   }
 
   private synchronized void initResourceManager(int index, Configuration conf) {
-    if (HAUtil.isHAEnabled(conf)) {
+    Configuration newConf = resourceManagers.length > 1 ?
-      conf.set(YarnConfiguration.RM_HA_ID, rmIds[index]);
+        new YarnConfiguration(conf) : conf;
+    if (HAUtil.isHAEnabled(newConf)) {
+      newConf.set(YarnConfiguration.RM_HA_ID, rmIds[index]);
     }
-    resourceManagers[index].init(conf);
+    resourceManagers[index].init(newConf);
     resourceManagers[index].getRMContext().getDispatcher().register(
         RMAppAttemptEventType.class,
         new EventHandler<RMAppAttemptEvent>() {
@@ -329,10 +331,11 @@ public class MiniYARNCluster extends CompositeService {
     } catch (Throwable t) {
       throw new YarnRuntimeException(t);
     }
+    Configuration conf = resourceManagers[index].getConfig();
     LOG.info("MiniYARN ResourceManager address: " +
-        getConfig().get(YarnConfiguration.RM_ADDRESS));
+        conf.get(YarnConfiguration.RM_ADDRESS));
     LOG.info("MiniYARN ResourceManager web address: " +
-        WebAppUtils.getRMWebAppURLWithoutScheme(getConfig()));
+        WebAppUtils.getRMWebAppURLWithoutScheme(conf));
   }
 
   @InterfaceAudience.Private
@@ -352,7 +355,6 @@ public class MiniYARNCluster extends CompositeService {
       resourceManagers[index].stop();
       resourceManagers[index] = null;
     }
-    Configuration conf = getConfig();
     resourceManagers[index] = new ResourceManager();
     initResourceManager(index, getConfig());
     startResourceManager(index);
@@ -433,6 +435,7 @@ public class MiniYARNCluster extends CompositeService {
   private class ResourceManagerWrapper extends AbstractService {
     private int index;
 
+
     public ResourceManagerWrapper(int i) {
       super(ResourceManagerWrapper.class.getName() + "_" + i);
       index = i;
@@ -448,10 +451,11 @@ public class MiniYARNCluster extends CompositeService {
     @Override
     protected synchronized void serviceStart() throws Exception {
       startResourceManager(index);
+      Configuration conf = resourceManagers[index].getConfig();
       LOG.info("MiniYARN ResourceManager address: " +
-               getConfig().get(YarnConfiguration.RM_ADDRESS));
+          conf.get(YarnConfiguration.RM_ADDRESS));
-      LOG.info("MiniYARN ResourceManager web address: " +
+      LOG.info("MiniYARN ResourceManager web address: " + WebAppUtils
-               WebAppUtils.getRMWebAppURLWithoutScheme(getConfig()));
+          .getRMWebAppURLWithoutScheme(conf));
       super.serviceStart();
     }
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/src/test/java/org/apache/hadoop/yarn/server/TestMiniYarnCluster.java

@@ -19,7 +19,9 @@
 package org.apache.hadoop.yarn.server;
 
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.yarn.conf.HAUtil;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
+import org.apache.hadoop.yarn.server.resourcemanager.HATestUtil;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -112,4 +114,39 @@ public class TestMiniYarnCluster {
       }
     }
   }
+
+  @Test
+  public void testMultiRMConf() {
+    String RM1_NODE_ID = "rm1", RM2_NODE_ID = "rm2";
+    int RM1_PORT_BASE = 10000, RM2_PORT_BASE = 20000;
+    Configuration conf = new YarnConfiguration();
+    conf.set(YarnConfiguration.RM_CLUSTER_ID, "yarn-test-cluster");
+    conf.setBoolean(YarnConfiguration.RECOVERY_ENABLED, true);
+    conf.setBoolean(YarnConfiguration.RM_HA_ENABLED, true);
+    conf.setBoolean(YarnConfiguration.AUTO_FAILOVER_ENABLED, false);
+    conf.set(YarnConfiguration.RM_HA_IDS, RM1_NODE_ID + "," + RM2_NODE_ID);
+    HATestUtil.setRpcAddressForRM(RM1_NODE_ID, RM1_PORT_BASE, conf);
+    HATestUtil.setRpcAddressForRM(RM2_NODE_ID, RM2_PORT_BASE, conf);
+    conf.setBoolean(YarnConfiguration.YARN_MINICLUSTER_FIXED_PORTS, true);
+    conf.setBoolean(YarnConfiguration.YARN_MINICLUSTER_USE_RPC, true);
+
+    MiniYARNCluster cluster =
+        new MiniYARNCluster(TestMiniYarnCluster.class.getName(),
+            2, 0, 1, 1);
+    cluster.init(conf);
+    Configuration conf1 = cluster.getResourceManager(0).getConfig(),
+        conf2 = cluster.getResourceManager(1).getConfig();
+    Assert.assertFalse(conf1 == conf2);
+    Assert.assertEquals("0.0.0.0:18032",
+        conf1.get(HAUtil.addSuffix(YarnConfiguration.RM_ADDRESS, RM1_NODE_ID)));
+    Assert.assertEquals("0.0.0.0:28032",
+        conf1.get(HAUtil.addSuffix(YarnConfiguration.RM_ADDRESS, RM2_NODE_ID)));
+    Assert.assertEquals("rm1", conf1.get(YarnConfiguration.RM_HA_ID));
+
+    Assert.assertEquals("0.0.0.0:18032",
+        conf2.get(HAUtil.addSuffix(YarnConfiguration.RM_ADDRESS, RM1_NODE_ID)));
+    Assert.assertEquals("0.0.0.0:28032",
+        conf2.get(HAUtil.addSuffix(YarnConfiguration.RM_ADDRESS, RM2_NODE_ID)));
+    Assert.assertEquals("rm2", conf2.get(YarnConfiguration.RM_HA_ID));
+  }
 }