YARN-2805. Fixed ResourceManager to load HA configs correctly before kerberos login. Contributed by Wangda Tan.

(cherry picked from commit 834e931d8efe4d806347b266e7e62929ce05389b)

hadoop-yarn-project/CHANGES.txt

@@ -838,6 +838,9 @@ Release 2.6.0 - UNRELEASED
     YARN-2767. Added a test case to verify that http static user cannot kill or submit
     apps in the secure mode. (Varun Vasudev via zjshen)
 
+    YARN-2805. Fixed ResourceManager to load HA configs correctly before kerberos
+    login. (Wangda Tan via vinodkv)
+
 Release 2.5.2 - UNRELEASED
 
   INCOMPATIBLE CHANGES

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

@@ -194,6 +194,12 @@ public class ResourceManager extends CompositeService implements Recoverable {
     this.conf = conf;
     this.rmContext = new RMContextImpl();
     
+    // Set HA configuration should be done before login
+    this.rmContext.setHAEnabled(HAUtil.isHAEnabled(this.conf));
+    if (this.rmContext.isHAEnabled()) {
+      HAUtil.verifyAndSetConfiguration(this.conf);
+    }
+    
     // Set UGI and do login
     // If security is enabled, use login user
     // If security is not enabled, use current user
@@ -245,11 +251,6 @@ public class ResourceManager extends CompositeService implements Recoverable {
     adminService = createAdminService();
     addService(adminService);
     rmContext.setRMAdminService(adminService);
-
-    this.rmContext.setHAEnabled(HAUtil.isHAEnabled(this.conf));
-    if (this.rmContext.isHAEnabled()) {
-      HAUtil.verifyAndSetConfiguration(this.conf);
-    }
     
     createAndInitActiveServices();