YARN-4326. Fix TestDistributedShell timeout as AHS in MiniYarnCluster no longer binds to default port 8188. (Meng Ding via wangda)

(cherry picked from commit 0783184f4b3f669f7211e42b395b62d63144100d)

hadoop-yarn-project/CHANGES.txt

@@ -987,6 +987,9 @@ Release 2.8.0 - UNRELEASED
     YARN-4127. RM fail with noAuth error if switched from failover to non-failover.
     (Varun Saxena via jianhe)
 
+    YARN-4326. Fix TestDistributedShell timeout as AHS in MiniYarnCluster no longer 
+    binds to default port 8188. (Meng Ding via wangda)
+
 Release 2.7.2 - 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

@@ -92,9 +92,14 @@ protected void setupInternal(int numNodeManager) throws Exception {
       yarnCluster.init(conf);
       
       yarnCluster.start();
-      
+
+      conf.set(
+          YarnConfiguration.TIMELINE_SERVICE_WEBAPP_ADDRESS,
+          MiniYARNCluster.getHostname() + ":"
+              + yarnCluster.getApplicationHistoryServer().getPort());
+
       waitForNMsToRegister();
-      
+
       URL url = Thread.currentThread().getContextClassLoader().getResource("yarn-site.xml");
       if (url == null) {
         throw new RuntimeException("Could not find 'yarn-site.xml' dummy file in classpath");