YARN-2890. MiniYarnCluster should turn on timeline service if configured to do so. Contributed by Mit Desai.

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/jobhistory/TestJobHistoryEventHandler.java

@@ -453,7 +453,7 @@ public class TestJobHistoryEventHandler {
     long currentTime = System.currentTimeMillis();
     try {
       yarnCluster = new MiniYARNCluster(
-            TestJobHistoryEventHandler.class.getSimpleName(), 1, 1, 1, 1, true);
+            TestJobHistoryEventHandler.class.getSimpleName(), 1, 1, 1, 1);
       yarnCluster.init(conf);
       yarnCluster.start();
       jheh.start();

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestMRTimelineEventHandling.java

@@ -34,6 +34,52 @@ import org.junit.Test;
 
 public class TestMRTimelineEventHandling {
 
+  @Test
+  public void testTimelineServiceStartInMiniCluster() throws Exception {
+    Configuration conf = new YarnConfiguration();
+
+    /*
+     * Timeline service should not start if the config is set to false
+     * Regardless to the value of MAPREDUCE_JOB_EMIT_TIMELINE_DATA
+     */
+    conf.setBoolean(YarnConfiguration.TIMELINE_SERVICE_ENABLED, false);
+    conf.setBoolean(MRJobConfig.MAPREDUCE_JOB_EMIT_TIMELINE_DATA, true);
+    MiniMRYarnCluster cluster = null;
+    try {
+      cluster = new MiniMRYarnCluster(
+          TestJobHistoryEventHandler.class.getSimpleName(), 1);
+      cluster.init(conf);
+      cluster.start();
+
+      //verify that the timeline service is not started.
+      Assert.assertNull("Timeline Service should not have been started",
+          cluster.getApplicationHistoryServer());
+    }
+    finally {
+      if(cluster != null) {
+        cluster.stop();
+      }
+    }
+    conf.setBoolean(YarnConfiguration.TIMELINE_SERVICE_ENABLED, false);
+    conf.setBoolean(MRJobConfig.MAPREDUCE_JOB_EMIT_TIMELINE_DATA, false);
+    cluster = null;
+    try {
+      cluster = new MiniMRYarnCluster(
+          TestJobHistoryEventHandler.class.getSimpleName(), 1);
+      cluster.init(conf);
+      cluster.start();
+
+      //verify that the timeline service is not started.
+      Assert.assertNull("Timeline Service should not have been started",
+          cluster.getApplicationHistoryServer());
+    }
+    finally {
+      if(cluster != null) {
+        cluster.stop();
+      }
+    }
+  }
+
   @Test
   public void testMRTimelineEventHandling() throws Exception {
     Configuration conf = new YarnConfiguration();
@@ -42,7 +88,7 @@ public class TestMRTimelineEventHandling {
     MiniMRYarnCluster cluster = null;
     try {
       cluster = new MiniMRYarnCluster(
-              TestJobHistoryEventHandler.class.getSimpleName(), 1, true);
+          TestJobHistoryEventHandler.class.getSimpleName(), 1);
       cluster.init(conf);
       cluster.start();
       TimelineStore ts = cluster.getApplicationHistoryServer()
@@ -96,7 +142,7 @@ public class TestMRTimelineEventHandling {
     MiniMRYarnCluster cluster = null;
     try {
       cluster = new MiniMRYarnCluster(
-          TestJobHistoryEventHandler.class.getSimpleName(), 1, true);
+          TestJobHistoryEventHandler.class.getSimpleName(), 1);
       cluster.init(conf);
       cluster.start();
       TimelineStore ts = cluster.getApplicationHistoryServer()
@@ -133,7 +179,7 @@ public class TestMRTimelineEventHandling {
     cluster = null;
     try {
       cluster = new MiniMRYarnCluster(
-          TestJobHistoryEventHandler.class.getSimpleName(), 1, true);
+          TestJobHistoryEventHandler.class.getSimpleName(), 1);
       cluster.init(conf);
       cluster.start();
       TimelineStore ts = cluster.getApplicationHistoryServer()

hadoop-yarn-project/CHANGES.txt

@@ -159,6 +159,9 @@ Release 2.8.0 - UNRELEASED
     YARN-3459. Fix failiure of TestLog4jWarningErrorMetricsAppender.
     (Varun Vasudev via wangda)
 
+    YARN-2890. MiniYarnCluster should turn on timeline service if
+    configured to do so. (Mit Desai via hitesh)
+
 Release 2.7.0 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-distributedshell/src/test/java/org/apache/hadoop/yarn/applications/distributedshell/TestDistributedShell.java

@@ -85,7 +85,7 @@ public class TestDistributedShell {
     if (yarnCluster == null) {
       yarnCluster =
           new MiniYARNCluster(TestDistributedShell.class.getSimpleName(), 1,
-              numNodeManager, 1, 1, true);
+              numNodeManager, 1, 1);
       yarnCluster.init(conf);
       
       yarnCluster.start();

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

@@ -57,7 +57,6 @@ import org.apache.hadoop.yarn.server.api.protocolrecords.RegisterNodeManagerResp
 import org.apache.hadoop.yarn.server.applicationhistoryservice.ApplicationHistoryServer;
 import org.apache.hadoop.yarn.server.applicationhistoryservice.ApplicationHistoryStore;
 import org.apache.hadoop.yarn.server.applicationhistoryservice.MemoryApplicationHistoryStore;
-import org.apache.hadoop.yarn.server.applicationhistoryservice.webapp.AHSWebApp;
 import org.apache.hadoop.yarn.server.nodemanager.Context;
 import org.apache.hadoop.yarn.server.nodemanager.NodeHealthCheckerService;
 import org.apache.hadoop.yarn.server.nodemanager.NodeManager;
@@ -262,8 +261,9 @@ public class MiniYARNCluster extends CompositeService {
       addService(new NodeManagerWrapper(index));
     }
 
-    if (enableAHS) {
-      addService(new ApplicationHistoryServerWrapper());
+    if(conf.getBoolean(YarnConfiguration.TIMELINE_SERVICE_ENABLED,
+        YarnConfiguration.DEFAULT_TIMELINE_SERVICE_ENABLED) || enableAHS) {
+        addService(new ApplicationHistoryServerWrapper());
     }
     
     super.serviceInit(

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

@@ -0,0 +1,115 @@
+/**
+ * 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;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.yarn.conf.YarnConfiguration;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class TestMiniYarnCluster {
+  @Test
+  public void testTimelineServiceStartInMiniCluster() throws Exception {
+    Configuration conf = new YarnConfiguration();
+    int numNodeManagers = 1;
+    int numLocalDirs = 1;
+    int numLogDirs = 1;
+    boolean enableAHS;
+
+    /*
+     * Timeline service should not start if TIMELINE_SERVICE_ENABLED == false
+     * and enableAHS flag == false
+     */
+    conf.setBoolean(YarnConfiguration.TIMELINE_SERVICE_ENABLED, false);
+    enableAHS = false;
+    MiniYARNCluster cluster = null;
+    try {
+      cluster = new MiniYARNCluster(TestMiniYarnCluster.class.getSimpleName(),
+          numNodeManagers, numLocalDirs, numLogDirs, numLogDirs, enableAHS);
+      cluster.init(conf);
+      cluster.start();
+
+      //verify that the timeline service is not started.
+      Assert.assertNull("Timeline Service should not have been started",
+          cluster.getApplicationHistoryServer());
+    }
+    finally {
+      if(cluster != null) {
+        cluster.stop();
+      }
+    }
+
+    /*
+     * Timeline service should start if TIMELINE_SERVICE_ENABLED == true
+     * and enableAHS == false
+     */
+    conf.setBoolean(YarnConfiguration.TIMELINE_SERVICE_ENABLED, true);
+    enableAHS = false;
+    cluster = null;
+    try {
+      cluster = new MiniYARNCluster(TestMiniYarnCluster.class.getSimpleName(),
+          numNodeManagers, numLocalDirs, numLogDirs, numLogDirs, enableAHS);
+      cluster.init(conf);
+      cluster.start();
+
+      //Timeline service may sometime take a while to get started
+      int wait = 0;
+      while(cluster.getApplicationHistoryServer() == null && wait < 20) {
+        Thread.sleep(500);
+        wait++;
+      }
+      //verify that the timeline service is started.
+      Assert.assertNotNull("Timeline Service should have been started",
+          cluster.getApplicationHistoryServer());
+    }
+    finally {
+      if(cluster != null) {
+        cluster.stop();
+      }
+    }
+    /*
+     * Timeline service should start if TIMELINE_SERVICE_ENABLED == false
+     * and enableAHS == true
+     */
+    conf.setBoolean(YarnConfiguration.TIMELINE_SERVICE_ENABLED, false);
+    enableAHS = true;
+    cluster = null;
+    try {
+      cluster = new MiniYARNCluster(TestMiniYarnCluster.class.getSimpleName(),
+          numNodeManagers, numLocalDirs, numLogDirs, numLogDirs, enableAHS);
+      cluster.init(conf);
+      cluster.start();
+
+      //Timeline service may sometime take a while to get started
+      int wait = 0;
+      while(cluster.getApplicationHistoryServer() == null && wait < 20) {
+        Thread.sleep(500);
+        wait++;
+      }
+      //verify that the timeline service is started.
+      Assert.assertNotNull("Timeline Service should have been started",
+          cluster.getApplicationHistoryServer());
+    }
+    finally {
+      if(cluster != null) {
+        cluster.stop();
+      }
+    }
+  }
+}