diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/RMAppImpl.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/RMAppImpl.java
index 61936bbc09a..4234e582573 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/RMAppImpl.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/RMAppImpl.java
@@ -455,6 +455,11 @@ public class RMAppImpl implements RMApp, Recoverable {
     if (submissionContext.getPriority() != null) {
       this.applicationPriority = Priority
           .newInstance(submissionContext.getPriority().getPriority());
+    } else {
+      // If incoming app does not have priority configured in submission
+      // context, system could be assume that its a 0 priority app and could be
+      // considered as normal.
+      this.applicationPriority = Priority.newInstance(0);
     }
 
     int globalMaxAppAttempts = conf.getInt(YarnConfiguration.RM_AM_MAX_ATTEMPTS,