YARN-400. RM can return null application resource usage report leading to NPE in client (Jason Lowe via tgraves)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1448244 13f79535-47bb-0310-9956-ffa450edef68

hadoop-yarn-project/CHANGES.txt

@@ -44,6 +44,9 @@ Release 0.23.7 - UNRELEASED
     YARN-362. Unexpected extra results when using webUI table search (Ravi
     Prakash via jlowe)
 
+    YARN-400. RM can return null application resource usage report leading to 
+    NPE in client (Jason Lowe via tgraves)
+
 Release 0.23.6 - 2013-02-06
 
   INCOMPATIBLE CHANGES

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

@@ -355,7 +355,8 @@ public class RMAppImpl implements RMApp {
       String host = UNAVAILABLE;
       String origTrackingUrl = UNAVAILABLE;
       int rpcPort = -1;
-      ApplicationResourceUsageReport appUsageReport = null;
+      ApplicationResourceUsageReport appUsageReport =
+          DUMMY_APPLICATION_RESOURCE_USAGE_REPORT;
       FinalApplicationStatus finishState = getFinalApplicationStatus();
       String diags = UNAVAILABLE;
       if (allowAccess) {
@@ -368,8 +369,6 @@ public class RMAppImpl implements RMApp {
           appUsageReport = currentAttempt.getApplicationResourceUsageReport();
         }
         diags = this.diagnostics.toString();
-      } else {
-        appUsageReport = DUMMY_APPLICATION_RESOURCE_USAGE_REPORT;
       }
       return BuilderUtils.newApplicationReport(this.applicationId, this.user,
           this.queue, this.name, host, rpcPort, clientToken,

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

@@ -29,6 +29,7 @@ import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.yarn.MockApps;
 import org.apache.hadoop.yarn.api.records.ApplicationId;
+import org.apache.hadoop.yarn.api.records.ApplicationReport;
 import org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext;
 import org.apache.hadoop.yarn.api.records.FinalApplicationStatus;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
@@ -505,4 +506,12 @@ public class TestRMAppTransitions {
     assertTimesAtFinish(application);
     assertAppState(RMAppState.KILLED, application);
   }
+
+  @Test
+  public void testGetAppReport() {
+    RMApp app = createNewTestApp();
+    assertAppState(RMAppState.NEW, app);
+    ApplicationReport report = app.createAndGetApplicationReport(true);
+    Assert.assertNotNull(report.getApplicationResourceUsageReport());
+  }
 }