YARN-3369. Missing NullPointer check in AppSchedulingInfo causes RM to die. (Brahma Reddy Battula via wangda)

(cherry picked from commit 6bc7710ec7f2592c4c87dd940fbe5827ef81fe72)

hadoop-yarn-project/CHANGES.txt

@@ -726,6 +726,9 @@ Release 2.7.0 - UNRELEASED
     YARN-3379. Fixed missing data in localityTable and ResourceRequests table
     in RM WebUI. (Xuan Gong via jianhe)
 
+    YARN-3369. Missing NullPointer check in AppSchedulingInfo causes RM to die.
+    (Brahma Reddy Battula via wangda)
+
 Release 2.6.0 - 2014-11-18
 
   INCOMPATIBLE CHANGES

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

@@ -239,7 +239,7 @@ public class AppSchedulingInfo {
 
   public synchronized Resource getResource(Priority priority) {
     ResourceRequest request = getResourceRequest(priority, ResourceRequest.ANY);
-    return request.getCapability();
+    return (request == null) ? null : request.getCapability();
   }
 
   public synchronized boolean isBlacklisted(String resourceName) {
@@ -382,9 +382,11 @@ public class AppSchedulingInfo {
     boolean deactivate = true;
     for (Priority priority : getPriorities()) {
       ResourceRequest request = getResourceRequest(priority, ResourceRequest.ANY);
-      if (request.getNumContainers() > 0) {
-        deactivate = false;
-        break;
+      if (request != null) {
+        if (request.getNumContainers() > 0) {
+          deactivate = false;
+          break;
+        }
       }
     }
     if (deactivate) {