YARN-9222. Print launchTime in ApplicationSummary

(cherry picked from commit 6cace58e212d3ee0aec988926a5a17c9cc58e645)

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

@@ -185,6 +185,7 @@ public class RMAppManager implements EventHandler<RMAppManagerEvent>,
           .add("appMasterHost", host)
           .add("submitTime", app.getSubmitTime())
           .add("startTime", app.getStartTime())
+          .add("launchTime", app.getLaunchTime())
           .add("finishTime", app.getFinishTime())
           .add("finalStatus", app.getFinalApplicationStatus())
           .add("memorySeconds", metrics.getMemorySeconds())

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

@@ -1069,6 +1069,7 @@ public class TestAppManager extends AppManagerTestBase{
     when(app.getState()).thenReturn(RMAppState.RUNNING);
     when(app.getApplicationType()).thenReturn("MAPREDUCE");
     when(app.getSubmitTime()).thenReturn(1000L);
+    when(app.getLaunchTime()).thenReturn(2000L);
     Map<String, Long> resourceSecondsMap = new HashMap<>();
     resourceSecondsMap.put(ResourceInformation.MEMORY_MB.getName(), 16384L);
     resourceSecondsMap.put(ResourceInformation.VCORES.getName(), 64L);
@@ -1089,6 +1090,7 @@ public class TestAppManager extends AppManagerTestBase{
     assertTrue(msg.contains("Multiline" + escaped +"UserName"));
     assertTrue(msg.contains("Multiline" + escaped +"QueueName"));
     assertTrue(msg.contains("submitTime=1000"));
+    assertTrue(msg.contains("launchTime=2000"));
     assertTrue(msg.contains("memorySeconds=16384"));
     assertTrue(msg.contains("vcoreSeconds=64"));
     assertTrue(msg.contains("preemptedAMContainers=1"));