YARN-4302. SLS not able start due to NPE in SchedulerApplicationAttempt. Contributed by Bibin A Chundatt.

(cherry picked from commit c28e16b40caf1e22f72cf2214ebc2fe2eaca4d03)

hadoop-tools/hadoop-sls/src/main/java/org/apache/hadoop/yarn/sls/scheduler/ResourceSchedulerWrapper.java

@@ -933,7 +933,7 @@ public class ResourceSchedulerWrapper
   @LimitedPrivate("yarn")
   @Unstable
   public Resource getClusterResource() {
-    return null;
+    return super.getClusterResource();
   }
 
   @Override

hadoop-yarn-project/CHANGES.txt

@@ -973,6 +973,9 @@ Release 2.8.0 - UNRELEASED
     YARN-3573. MiniMRYarnCluster constructor that starts the timeline server
     using a boolean should be marked deprecated. (Brahma Reddy Battula via ozawa)
 
+    YARN-4302. SLS not able start due to NPE in SchedulerApplicationAttempt
+    (Bibin A Chundatt via vvasudev)
+
 Release 2.7.2 - UNRELEASED
 
   INCOMPATIBLE CHANGES