diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/java/org/apache/hadoop/yarn/server/scheduler/ResourceRequestSetKey.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/java/org/apache/hadoop/yarn/server/scheduler/ResourceRequestSetKey.java
index 4db88efbd5e..38162619c85 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/java/org/apache/hadoop/yarn/server/scheduler/ResourceRequestSetKey.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/java/org/apache/hadoop/yarn/server/scheduler/ResourceRequestSetKey.java
@@ -88,7 +88,7 @@ public class ResourceRequestSetKey extends SchedulerRequestKey {
 
   @Override
   public boolean equals(Object obj) {
-    if (obj == null || !(obj instanceof SchedulerRequestKey)) {
+    if (!(obj instanceof SchedulerRequestKey)) {
       return false;
     }
     if (!(obj instanceof ResourceRequestSetKey)) {